121010211211210 has 16 divisors (see below), whose sum is σ = 217852623083592. Its totient is φ = 48396474950400.

The previous prime is 121010211211163. The next prime is 121010211211217. The reversal of 121010211211210 is 12112112010121.

It can be written as a sum of positive squares in 4 ways, for example, as 63673649098929 + 57336562112281 = 7979577^2 + 7572091^2 .

It is not an unprimeable number, because it can be changed into a prime (121010211211217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 951124971 + ... + 951252190.

Almost surely, 2^{121010211211210} is an apocalyptic number.

121010211211210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121010211211210 is a deficient number, since it is larger than the sum of its proper divisors (96842411872382).

121010211211210 is a wasteful number, since it uses less digits than its factorization.

121010211211210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1902383529.

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

Adding to 121010211211210 its reverse (12112112010121), we get a palindrome (133122323221331).

The spelling of 121010211211210 in words is "one hundred twenty-one trillion, ten billion, two hundred eleven million, two hundred eleven thousand, two hundred ten".