211210000000022 has 4 divisors (see below), whose sum is σ = 316815000000036. Its totient is φ = 105605000000010.

The previous prime is 211210000000007. The next prime is 211210000000079. The reversal of 211210000000022 is 220000000012112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 211209999999940 and 211210000000012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52802500000004 + ... + 52802500000007.

It is an arithmetic number, because the mean of its divisors is an integer number (79203750000009).

Almost surely, 2^{211210000000022} is an apocalyptic number.

211210000000022 is a deficient number, since it is larger than the sum of its proper divisors (105605000000014).

211210000000022 is a wasteful number, since it uses less digits than its factorization.

211210000000022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105605000000013.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 211210000000022 its reverse (220000000012112), we get a palindrome (431210000012134).

The spelling of 211210000000022 in words is "two hundred eleven trillion, two hundred ten billion, twenty-two", and thus it is an aban number.