1212211012210 has 256 divisors, whose sum is σ = 2682430732800. Its totient is φ = 388708761600.

The previous prime is 1212211012183. The next prime is 1212211012219. The reversal of 1212211012210 is 122101122121.

It is not an unprimeable number, because it can be changed into a prime (1212211012219) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1498406286 + ... + 1498407094.

It is an arithmetic number, because the mean of its divisors is an integer number (10478245050).

Almost surely, 2^{1212211012210} is an apocalyptic number.

1212211012210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212211012210 is an abundant number, since it is smaller than the sum of its proper divisors (1470219720590).

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

1212211012210 is a wasteful number, since it uses less digits than its factorization.

1212211012210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1212211012210 its reverse (122101122121), we get a palindrome (1334312134331).

The spelling of 1212211012210 in words is "one trillion, two hundred twelve billion, two hundred eleven million, twelve thousand, two hundred ten".