20100211212212 has 24 divisors (see below), whose sum is σ = 35537106023496. Its totient is φ = 9947281010688.

The previous prime is 20100211212181. The next prime is 20100211212247. The reversal of 20100211212212 is 21221211200102.

It can be written as a sum of positive squares in 4 ways, for example, as 1130998218256 + 18969212993956 = 1063484^2 + 4355366^2 .

It is a congruent number.

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, 65930513 + ... + 66234680.

It is an arithmetic number, because the mean of its divisors is an integer number (1480712750979).

Almost surely, 2^{20100211212212} is an apocalyptic number.

It is an amenable number.

20100211212212 is a deficient number, since it is larger than the sum of its proper divisors (15436894811284).

20100211212212 is a wasteful number, since it uses less digits than its factorization.

20100211212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132165587 (or 132165585 counting only the distinct ones).

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

Adding to 20100211212212 its reverse (21221211200102), we get a palindrome (41321422412314).

The spelling of 20100211212212 in words is "twenty trillion, one hundred billion, two hundred eleven million, two hundred twelve thousand, two hundred twelve".