121021111120010 has 32 divisors (see below), whose sum is σ = 217905323079312. Its totient is φ = 48393485844480.

The previous prime is 121021111119983. The next prime is 121021111120051. The reversal of 121021111120010 is 10021111120121.

It can be written as a sum of positive squares in 8 ways, for example, as 25690472804929 + 95330638315081 = 5068577^2 + 9763741^2 .

It is a super-2 number, since 2×121021111120010² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 494728130 + ... + 494972690.

Almost surely, 2^{121021111120010} is an apocalyptic number.

121021111120010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121021111120010 is a deficient number, since it is larger than the sum of its proper divisors (96884211959302).

121021111120010 is a wasteful number, since it uses less digits than its factorization.

121021111120010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259658.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 121021111120010 its reverse (10021111120121), we get a palindrome (131042222240131).

It can be divided in two parts, 121021111 and 120010, that added together give a palindrome (121141121).

The spelling of 121021111120010 in words is "one hundred twenty-one trillion, twenty-one billion, one hundred eleven million, one hundred twenty thousand, ten".