121021011220210 has 32 divisors (see below), whose sum is σ = 223691498421552. Its totient is φ = 47123949588480.

The previous prime is 121021011220183. The next prime is 121021011220229. The reversal of 121021011220210 is 12022110120121.

It can be written as a sum of positive squares in 8 ways, for example, as 30732798176089 + 90288213044121 = 5543717^2 + 9502011^2 .

It is a super-2 number, since 2×121021011220210² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1022595987 + ... + 1022714326.

Almost surely, 2^{121021011220210} is an apocalyptic number.

121021011220210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121021011220210 is a deficient number, since it is larger than the sum of its proper divisors (102670487201342).

121021011220210 is a wasteful number, since it uses less digits than its factorization.

121021011220210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045310478.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121021011220210 its reverse (12022110120121), we get a palindrome (133043121340331).

The spelling of 121021011220210 in words is "one hundred twenty-one trillion, twenty-one billion, eleven million, two hundred twenty thousand, two hundred ten".