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1220020131000 = 233531123360937
BaseRepresentation
bin10001110000001110110…
…111011101010010111000
311022122002022010010202210
4101300032313131102320
5124442100123143000
62332245225255120
7154100144002626
oct21601667352270
94278068103683
101220020131000
11430453615900
121785463344a0
138b0801c0578
1443099370516
1521b075d1350
hex11c0eddd4b8

1220020131000 has 192 divisors, whose sum is σ = 4183964497440. Its totient is φ = 295762368000.

The previous prime is 1220020130999. The next prime is 1220020131061. The reversal of 1220020131000 is 1310200221.

It is a super-2 number, since 2×12200201310002 (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1317469 + ... + 2043468.

Almost surely, 21220020131000 is an apocalyptic number.

1220020131000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220020131000 is an abundant number, since it is smaller than the sum of its proper divisors (2963944366440).

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

1220020131000 is a wasteful number, since it uses less digits than its factorization.

1220020131000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3360983 (or 3360958 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 1220020131000 its reverse (1310200221), we get a palindrome (1221330331221).

The spelling of 1220020131000 in words is "one trillion, two hundred twenty billion, twenty million, one hundred thirty-one thousand".