1021212210 has 32 divisors (see below), whose sum is σ = 2517152832. Its totient is φ = 264962880.

The previous prime is 1021212197. The next prime is 1021212211. The reversal of 1021212210 is 122121201.

It is not an unprimeable number, because it can be changed into a prime (1021212211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 458896 + ... + 461115.

It is an arithmetic number, because the mean of its divisors is an integer number (78661026).

Almost surely, 2^1021212210 is an apocalyptic number.

1021212210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021212210 is an abundant number, since it is smaller than the sum of its proper divisors (1495940622).

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

1021212210 is a wasteful number, since it uses less digits than its factorization.

1021212210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920058.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1021212210 is about 31956.4110938635. The cubic root of 1021212210 is about 1007.0213223183.

Adding to 1021212210 its reverse (122121201), we get a palindrome (1143333411).

It can be divided in two parts, 10212 and 12210, that added together give a palindrome (22422).

The spelling of 1021212210 in words is "one billion, twenty-one million, two hundred twelve thousand, two hundred ten".