221001212022 has 32 divisors (see below), whose sum is σ = 465286859520. Its totient is φ = 69786684000.

The previous prime is 221001212011. The next prime is 221001212077. The reversal of 221001212022 is 220212100122.

It is a junction number, because it is equal to n+sod(n) for n = 221001211992 and 221001212010.

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, 4807647 + ... + 4853397.

It is an arithmetic number, because the mean of its divisors is an integer number (14540214360).

Almost surely, 2^221001212022 is an apocalyptic number.

221001212022 is an abundant number, since it is smaller than the sum of its proper divisors (244285647498).

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

221001212022 is a wasteful number, since it uses less digits than its factorization.

221001212022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88148.

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

Adding to 221001212022 its reverse (220212100122), we get a palindrome (441213312144).

The spelling of 221001212022 in words is "two hundred twenty-one billion, one million, two hundred twelve thousand, twenty-two".