1210021569913 has 8 divisors (see below), whose sum is σ = 1303112816768. Its totient is φ = 1116932132304.

The previous prime is 1210021569857. The next prime is 1210021569931. The reversal of 1210021569913 is 3199651200121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1210021569913 is a prime.

It is a super-3 number, since 3×1210021569913³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210021569943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1145920 + ... + 1932142.

It is an arithmetic number, because the mean of its divisors is an integer number (162889102096).

Almost surely, 2^{1210021569913} is an apocalyptic number.

1210021569913 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1210021569913 is a deficient number, since it is larger than the sum of its proper divisors (93091246855).

1210021569913 is a wasteful number, since it uses less digits than its factorization.

1210021569913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904623.

The product of its (nonzero) digits is 29160, while the sum is 40.

The spelling of 1210021569913 in words is "one trillion, two hundred ten billion, twenty-one million, five hundred sixty-nine thousand, nine hundred thirteen".