1020022101 has 24 divisors (see below), whose sum is σ = 1757059200. Its totient is φ = 557526816.

The previous prime is 1020022097. The next prime is 1020022111. The reversal of 1020022101 is 1012200201.

It is not a de Polignac number, because 1020022101 - 2² = 1020022097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020022111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 350526 + ... + 353423.

It is an arithmetic number, because the mean of its divisors is an integer number (73210800).

Almost surely, 2^1020022101 is an apocalyptic number.

It is an amenable number.

1020022101 is a deficient number, since it is larger than the sum of its proper divisors (737037099).

1020022101 is a wasteful number, since it uses less digits than its factorization.

1020022101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703985 (or 703982 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1020022101 is about 31937.7848480448. The cubic root of 1020022101 is about 1006.6299798895.

Adding to 1020022101 its reverse (1012200201), we get a palindrome (2032222302).

The spelling of 1020022101 in words is "one billion, twenty million, twenty-two thousand, one hundred one".