121262012090 has 16 divisors (see below), whose sum is σ = 218481719040. Its totient is φ = 48458116560.

The previous prime is 121262012083. The next prime is 121262012093. The reversal of 121262012090 is 90210262121.

It is a super-2 number, since 2×121262012090² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121262012093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5825126 + ... + 5845905.

It is an arithmetic number, because the mean of its divisors is an integer number (13655107440).

Almost surely, 2^121262012090 is an apocalyptic number.

121262012090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121262012090 is a deficient number, since it is larger than the sum of its proper divisors (97219706950).

121262012090 is a wasteful number, since it uses less digits than its factorization.

121262012090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11672077.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 121262012090 in words is "one hundred twenty-one billion, two hundred sixty-two million, twelve thousand, ninety".