221210012022 has 16 divisors (see below), whose sum is σ = 442455519792. Its totient is φ = 73730754720.

The previous prime is 221210011991. The next prime is 221210012069. The reversal of 221210012022 is 220210012122.

It is a junction number, because it is equal to n+sod(n) for n = 221210011992 and 221210012010.

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, 1397629 + ... + 1547832.

It is an arithmetic number, because the mean of its divisors is an integer number (27653469987).

Almost surely, 2^221210012022 is an apocalyptic number.

221210012022 is an abundant number, since it is smaller than the sum of its proper divisors (221245507770).

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

221210012022 is a wasteful number, since it uses less digits than its factorization.

221210012022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2957983.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221210012022 its reverse (220210012122), we get a palindrome (441420024144).

The spelling of 221210012022 in words is "two hundred twenty-one billion, two hundred ten million, twelve thousand, twenty-two".