1021220022 has 16 divisors (see below), whose sum is σ = 2162583792. Its totient is φ = 320382720.

The previous prime is 1021220021. The next prime is 1021220027. The reversal of 1021220022 is 2200221201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021220021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5005879 + ... + 5006082.

It is an arithmetic number, because the mean of its divisors is an integer number (135161487).

Almost surely, 2^1021220022 is an apocalyptic number.

1021220022 is an abundant number, since it is smaller than the sum of its proper divisors (1141363770).

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

1021220022 is a wasteful number, since it uses less digits than its factorization.

1021220022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10011983.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1021220022 is about 31956.5333226243. The cubic root of 1021220022 is about 1007.0238901262.

Adding to 1021220022 its reverse (2200221201), we get a palindrome (3221441223).

The spelling of 1021220022 in words is "one billion, twenty-one million, two hundred twenty thousand, twenty-two".