121131200210 has 32 divisors (see below), whose sum is σ = 223884535680. Its totient is φ = 47168788608.

The previous prime is 121131200209. The next prime is 121131200261. The reversal of 121131200210 is 12002131121.

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, 935867 + ... + 1057406.

It is an arithmetic number, because the mean of its divisors is an integer number (6996391740).

Almost surely, 2^121131200210 is an apocalyptic number.

121131200210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121131200210 is a deficient number, since it is larger than the sum of its proper divisors (102753335470).

121131200210 is a wasteful number, since it uses less digits than its factorization.

121131200210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993442.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 121131200210 its reverse (12002131121), we get a palindrome (133133331331).

The spelling of 121131200210 in words is "one hundred twenty-one billion, one hundred thirty-one million, two hundred thousand, two hundred ten".