1022021039 has 8 divisors (see below), whose sum is σ = 1158566640. Its totient is φ = 893750976.

The previous prime is 1022021017. The next prime is 1022021071. The reversal of 1022021039 is 9301202201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1022021039 - 2²⁴ = 1005243823 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1022021039.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022021009) 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, 2068622 + ... + 2069115.

It is an arithmetic number, because the mean of its divisors is an integer number (144820830).

Almost surely, 2^1022021039 is an apocalyptic number.

1022021039 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1022021039 is a deficient number, since it is larger than the sum of its proper divisors (136545601).

1022021039 is a wasteful number, since it uses less digits than its factorization.

1022021039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4137769.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1022021039 is about 31969.0637804738. The cubic root of 1022021039 is about 1007.2871152971.

The spelling of 1022021039 in words is "one billion, twenty-two million, twenty-one thousand, thirty-nine".