1012211022212 has 24 divisors (see below), whose sum is σ = 2019841905816. Its totient is φ = 439693475328.

The previous prime is 1012211022187. The next prime is 1012211022253. The reversal of 1012211022212 is 2122201122101.

It can be written as a sum of positive squares in 4 ways, for example, as 52328392516 + 959882629696 = 228754^2 + 979736^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

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, 572516663 + ... + 572518430.

It is an arithmetic number, because the mean of its divisors is an integer number (84160079409).

Almost surely, 2^{1012211022212} is an apocalyptic number.

It is an amenable number.

1012211022212 is a deficient number, since it is larger than the sum of its proper divisors (1007630883604).

1012211022212 is a wasteful number, since it uses less digits than its factorization.

1012211022212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145035127 (or 1145035125 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1012211022212 its reverse (2122201122101), we get a palindrome (3134412144313).

The spelling of 1012211022212 in words is "one trillion, twelve billion, two hundred eleven million, twenty-two thousand, two hundred twelve".