1022201020 has 24 divisors (see below), whose sum is σ = 2153537568. Its totient is φ = 407563200.

The previous prime is 1022201017. The next prime is 1022201023. The reversal of 1022201020 is 201022201.

It is an interprime number because it is at equal distance from previous prime (1022201017) and next prime (1022201023).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1022200988 and 1022201006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022201023) 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, 75951 + ... + 88390.

It is an arithmetic number, because the mean of its divisors is an integer number (89730732).

Almost surely, 2^1022201020 is an apocalyptic number.

1022201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022201020 is an abundant number, since it is smaller than the sum of its proper divisors (1131336548).

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

1022201020 is a wasteful number, since it uses less digits than its factorization.

1022201020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164661 (or 164659 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1022201020 is about 31971.8785810280. The cubic root of 1022201020 is about 1007.3462405970.

Adding to 1022201020 its reverse (201022201), we get a palindrome (1223223221).

The spelling of 1022201020 in words is "one billion, twenty-two million, two hundred one thousand, twenty".