21211000011222 has 32 divisors (see below), whose sum is σ = 48482960064000. Its totient is φ = 6060201427008.

The previous prime is 21211000011191. The next prime is 21211000011241. The reversal of 21211000011222 is 22211000011212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 424522 + ... + 6527037.

It is an arithmetic number, because the mean of its divisors is an integer number (1515092502000).

Almost surely, 2^{21211000011222} is an apocalyptic number.

21211000011222 is an abundant number, since it is smaller than the sum of its proper divisors (27271960052778).

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

21211000011222 is a wasteful number, since it uses less digits than its factorization.

21211000011222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7024220.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21211000011222 its reverse (22211000011212), we get a palindrome (43422000022434).

The spelling of 21211000011222 in words is "twenty-one trillion, two hundred eleven billion, eleven thousand, two hundred twenty-two".