121021201220110 has 16 divisors (see below), whose sum is σ = 217842575533200. Its totient is φ = 48407499746496.

The previous prime is 121021201220107. The next prime is 121021201220141. The reversal of 121021201220110 is 11022102120121.

It is a super-2 number, since 2×121021201220110² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

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, 122074320 + ... + 123061699.

It is an arithmetic number, because the mean of its divisors is an integer number (13615160970825).

Almost surely, 2^{121021201220110} is an apocalyptic number.

121021201220110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121021201220110 is a deficient number, since it is larger than the sum of its proper divisors (96821374313090).

121021201220110 is a wasteful number, since it uses less digits than its factorization.

121021201220110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245185395.

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

Adding to 121021201220110 its reverse (11022102120121), we get a palindrome (132043303340231).

The spelling of 121021201220110 in words is "one hundred twenty-one trillion, twenty-one billion, two hundred one million, two hundred twenty thousand, one hundred ten".