2100021222212 has 24 divisors (see below), whose sum is σ = 3874730022240. Its totient is φ = 993134640960.

The previous prime is 2100021222199. The next prime is 2100021222239. The reversal of 2100021222212 is 2122221200012.

It is a happy 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, 22345214 + ... + 22438997.

It is an arithmetic number, because the mean of its divisors is an integer number (161447084260).

Almost surely, 2^{2100021222212} is an apocalyptic number.

It is an amenable number.

2100021222212 is a deficient number, since it is larger than the sum of its proper divisors (1774708800028).

2100021222212 is a wasteful number, since it uses less digits than its factorization.

2100021222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44784851 (or 44784849 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2100021222212 its reverse (2122221200012), we get a palindrome (4222242422224).

The spelling of 2100021222212 in words is "two trillion, one hundred billion, twenty-one million, two hundred twenty-two thousand, two hundred twelve".