1021212222212 has 24 divisors (see below), whose sum is σ = 2199534017856. Its totient is φ = 403996043808.

The previous prime is 1021212222203. The next prime is 1021212222287. The reversal of 1021212222212 is 2122222121201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1402763678 + ... + 1402764405.

It is an arithmetic number, because the mean of its divisors is an integer number (91647250744).

Almost surely, 2^{1021212222212} is an apocalyptic number.

It is an amenable number.

1021212222212 is an abundant number, since it is smaller than the sum of its proper divisors (1178321795644).

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

1021212222212 is a wasteful number, since it uses less digits than its factorization.

1021212222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2805528107 (or 2805528105 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1021212222212 its reverse (2122222121201), we get a palindrome (3143434343413).

The spelling of 1021212222212 in words is "one trillion, twenty-one billion, two hundred twelve million, two hundred twenty-two thousand, two hundred twelve".