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1220100211012 = 22417439635433
BaseRepresentation
bin10001110000010011101…
…000111100000101000100
311022122021212210121220011
4101300103220330011010
5124442231123223022
62332301205520004
7154102135451224
oct21602350740504
94278255717804
101220100211012
11430494841131
12178569113004
138b09397b1a7
14430a5c58084
1521b0e64d977
hex11c13a3c144

1220100211012 has 12 divisors (see below), whose sum is σ = 2187252817596. Its totient is φ = 595170834560.

The previous prime is 1220100210977. The next prime is 1220100211019. The reversal of 1220100211012 is 2101120010221.

It can be written as a sum of positive squares in 2 ways, for example, as 187059710016 + 1033040500996 = 432504^2 + 1016386^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1220100210983 and 1220100211001.

It is not an unprimeable number, because it can be changed into a prime (1220100211019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3719817553 + ... + 3719817880.

It is an arithmetic number, because the mean of its divisors is an integer number (182271068133).

Almost surely, 21220100211012 is an apocalyptic number.

It is an amenable number.

1220100211012 is a deficient number, since it is larger than the sum of its proper divisors (967152606584).

1220100211012 is a wasteful number, since it uses less digits than its factorization.

1220100211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7439635478 (or 7439635476 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1220100211012 its reverse (2101120010221), we get a palindrome (3321220221233).

The spelling of 1220100211012 in words is "one trillion, two hundred twenty billion, one hundred million, two hundred eleven thousand, twelve".

Divisors: 1 2 4 41 82 164 7439635433 14879270866 29758541732 305025052753 610050105506 1220100211012