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1213322121032 = 237157138002971
BaseRepresentation
bin10001101001111111101…
…000100100111101001000
311021222210111121222102112
4101221333220210331020
5124334340430333112
62325220435521452
7153442152602030
oct21517750447510
94258714558375
101213322121032
1142862678487a
12177197159288
138a553631168
1442a219848c0
152186456aa22
hex11a7fa24f48

1213322121032 has 32 divisors (see below), whose sum is σ = 2616536349120. Its totient is φ = 516683119680.

The previous prime is 1213322121023. The next prime is 1213322121043. The reversal of 1213322121032 is 2301212233121.

It is a junction number, because it is equal to n+sod(n) for n = 1213322120989 and 1213322121007.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68992694 + ... + 69010277.

It is an arithmetic number, because the mean of its divisors is an integer number (81766760910).

Almost surely, 21213322121032 is an apocalyptic number.

It is an amenable number.

1213322121032 is an abundant number, since it is smaller than the sum of its proper divisors (1403214228088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213322121032 is a wasteful number, since it uses less digits than its factorization.

1213322121032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138003141 (or 138003137 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1213322121032 its reverse (2301212233121), we get a palindrome (3514534354153).

The spelling of 1213322121032 in words is "one trillion, two hundred thirteen billion, three hundred twenty-two million, one hundred twenty-one thousand, thirty-two".

Divisors: 1 2 4 7 8 14 28 56 157 314 628 1099 1256 2198 4396 8792 138002971 276005942 552011884 966020797 1104023768 1932041594 3864083188 7728166376 21666466447 43332932894 86665865788 151665265129 173331731576 303330530258 606661060516 1213322121032