1022040021 has 8 divisors (see below), whose sum is σ = 1371866400. Its totient is φ = 676786832.

The previous prime is 1022039999. The next prime is 1022040037. The reversal of 1022040021 is 1200402201.

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 1022040021 - 2⁵ = 1022039989 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1022039979 and 1022040006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022040091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1142775 + ... + 1143668.

It is an arithmetic number, because the mean of its divisors is an integer number (171483300).

Almost surely, 2^1022040021 is an apocalyptic number.

It is an amenable number.

1022040021 is a deficient number, since it is larger than the sum of its proper divisors (349826379).

1022040021 is a wasteful number, since it uses less digits than its factorization.

1022040021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2286595.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1022040021 is about 31969.3606598568. The cubic root of 1022040021 is about 1007.2933513741.

Adding to 1022040021 its reverse (1200402201), we get a palindrome (2222442222).

The spelling of 1022040021 in words is "one billion, twenty-two million, forty thousand, twenty-one".