1022111020 has 48 divisors (see below), whose sum is σ = 2455584768. Its totient is φ = 350078400.

The previous prime is 1022110993. The next prime is 1022111047. The reversal of 1022111020 is 201112201.

It is an interprime number because it is at equal distance from previous prime (1022110993) and next prime (1022111047).

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 = 1022110988 and 1022111006.

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, 157969 + ... + 164311.

It is an arithmetic number, because the mean of its divisors is an integer number (51158016).

Almost surely, 2^1022111020 is an apocalyptic number.

1022111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022111020 is an abundant number, since it is smaller than the sum of its proper divisors (1433473748).

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

1022111020 is a wasteful number, since it uses less digits than its factorization.

1022111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7510 (or 7508 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1022111020 is about 31970.4710631545. The cubic root of 1022111020 is about 1007.3166756938.

Adding to 1022111020 its reverse (201112201), we get a palindrome (1223223221).

The spelling of 1022111020 in words is "one billion, twenty-two million, one hundred eleven thousand, twenty".