221020211012022 has 16 divisors (see below), whose sum is σ = 491156024471280. Its totient is φ = 73673403670656.

The previous prime is 221020211011993. The next prime is 221020211012047. The reversal of 221020211012022 is 220210112020122.

It is a happy number.

221020211012022 is a `hidden beast` number, since 2 + 210 + 202 + 110 + 120 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 221020211011986 and 221020211012004.

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, 2046483435243 + ... + 2046483435350.

It is an arithmetic number, because the mean of its divisors is an integer number (30697251529455).

Almost surely, 2^{221020211012022} is an apocalyptic number.

221020211012022 is an abundant number, since it is smaller than the sum of its proper divisors (270135813459258).

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

221020211012022 is a wasteful number, since it uses less digits than its factorization.

221020211012022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4092966870604 (or 4092966870598 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 221020211012022 its reverse (220210112020122), we get a palindrome (441230323032144).

The spelling of 221020211012022 in words is "two hundred twenty-one trillion, twenty billion, two hundred eleven million, twelve thousand, twenty-two".