121021011010 has 16 divisors (see below), whose sum is σ = 220462373376. Its totient is φ = 47825170288.

The previous prime is 121021010993. The next prime is 121021011127. The reversal of 121021011010 is 10110120121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72903394 + ... + 72905053.

It is an arithmetic number, because the mean of its divisors is an integer number (13778898336).

Almost surely, 2^121021011010 is an apocalyptic number.

121021011010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121021011010 is a deficient number, since it is larger than the sum of its proper divisors (99441362366).

121021011010 is a wasteful number, since it uses less digits than its factorization.

121021011010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145808537.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 121021011010 its reverse (10110120121), we get a palindrome (131131131131).

The spelling of 121021011010 in words is "one hundred twenty-one billion, twenty-one million, eleven thousand, ten".