121001012210 has 32 divisors (see below), whose sum is σ = 234584828352. Its totient is φ = 44671769280.

The previous prime is 121001012207. The next prime is 121001012263. The reversal of 121001012210 is 12210100121.

It is a junction number, because it is equal to n+sod(n) for n = 121001012191 and 121001012200.

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, 1083905 + ... + 1190315.

It is an arithmetic number, because the mean of its divisors is an integer number (7330775886).

Almost surely, 2^121001012210 is an apocalyptic number.

121001012210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121001012210 is a deficient number, since it is larger than the sum of its proper divisors (113583816142).

121001012210 is a wasteful number, since it uses less digits than its factorization.

121001012210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115178.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121001012210 its reverse (12210100121), we get a palindrome (133211112331).

The spelling of 121001012210 in words is "one hundred twenty-one billion, one million, twelve thousand, two hundred ten".