121335020210 has 64 divisors (see below), whose sum is σ = 239232559104. Its totient is φ = 44108774400.

The previous prime is 121335020189. The next prime is 121335020231. The reversal of 121335020210 is 12020533121.

It is an interprime number because it is at equal distance from previous prime (121335020189) and next prime (121335020231).

It is a super-2 number, since 2×121335020210² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2404499 + ... + 2454441.

It is an arithmetic number, because the mean of its divisors is an integer number (3738008736).

Almost surely, 2^121335020210 is an apocalyptic number.

121335020210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121335020210 is a deficient number, since it is larger than the sum of its proper divisors (117897538894).

121335020210 is a wasteful number, since it uses less digits than its factorization.

121335020210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50459.

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 121335020210 its reverse (12020533121), we get a palindrome (133355553331).

The spelling of 121335020210 in words is "one hundred twenty-one billion, three hundred thirty-five million, twenty thousand, two hundred ten".