121011212210 has 32 divisors (see below), whose sum is σ = 248957718912. Its totient is φ = 41486163840.

The previous prime is 121011212177. The next prime is 121011212227. The reversal of 121011212210 is 12212110121.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 881945 + ... + 1009875.

It is an arithmetic number, because the mean of its divisors is an integer number (7779928716).

Almost surely, 2^121011212210 is an apocalyptic number.

121011212210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121011212210 is an abundant number, since it is smaller than the sum of its proper divisors (127946506702).

121011212210 is a wasteful number, since it uses less digits than its factorization.

121011212210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141458.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121011212210 its reverse (12212110121), we get a palindrome (133223322331).

The spelling of 121011212210 in words is "one hundred twenty-one billion, eleven million, two hundred twelve thousand, two hundred ten".