121211212010 has 64 divisors (see below), whose sum is σ = 252233498880. Its totient is φ = 41078707200.

The previous prime is 121211211997. The next prime is 121211212051. The reversal of 121211212010 is 10212112121.

121211212010 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

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, 4362482 + ... + 4390178.

It is an arithmetic number, because the mean of its divisors is an integer number (3941148420).

Almost surely, 2^121211212010 is an apocalyptic number.

121211212010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121211212010 is an abundant number, since it is smaller than the sum of its proper divisors (131022286870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121211212010 is a wasteful number, since it uses less digits than its factorization.

121211212010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28431.

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

Adding to 121211212010 its reverse (10212112121), we get a palindrome (131423324131).

The spelling of 121211212010 in words is "one hundred twenty-one billion, two hundred eleven million, two hundred twelve thousand, ten".