1022251020 has 48 divisors (see below), whose sum is σ = 3271204608. Its totient is φ = 233657280.

The previous prime is 1022251007. The next prime is 1022251057. The reversal of 1022251020 is 201522201.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 1216546 + ... + 1217385.

It is an arithmetic number, because the mean of its divisors is an integer number (68150096).

Almost surely, 2^1022251020 is an apocalyptic number.

1022251020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022251020 is an abundant number, since it is smaller than the sum of its proper divisors (2248953588).

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

1022251020 is a wasteful number, since it uses less digits than its factorization.

1022251020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2433950 (or 2433948 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1022251020 is about 31972.6605086283. The cubic root of 1022251020 is about 1007.3626647933.

Adding to 1022251020 its reverse (201522201), we get a palindrome (1223773221).

The spelling of 1022251020 in words is "one billion, twenty-two million, two hundred fifty-one thousand, twenty".