1202100021312 has 56 divisors (see below), whose sum is σ = 3180912002400. Its totient is φ = 400655195136.

The previous prime is 1202100021223. The next prime is 1202100021323. The reversal of 1202100021312 is 2131200012021.

It is a super-2 number, since 2×1202100021312² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1202100021291 and 1202100021300.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1393764 + ... + 2084892.

Almost surely, 2^{1202100021312} is an apocalyptic number.

1202100021312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1202100021312 is an abundant number, since it is smaller than the sum of its proper divisors (1978811981088).

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

1202100021312 is an equidigital number, since it uses as much as digits as its factorization.

1202100021312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700203 (or 700193 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1202100021312 its reverse (2131200012021), we get a palindrome (3333300033333).

The spelling of 1202100021312 in words is "one trillion, two hundred two billion, one hundred million, twenty-one thousand, three hundred twelve".