1022021010021 has 16 divisors (see below), whose sum is σ = 1499731560000. Its totient is φ = 613925195520.

The previous prime is 1022021010013. The next prime is 1022021010037. The reversal of 1022021010021 is 1200101202201.

It is not a de Polignac number, because 1022021010021 - 2³ = 1022021010013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1022021009979 and 1022021010006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022021010041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137033146 + ... + 137040603.

It is an arithmetic number, because the mean of its divisors is an integer number (93733222500).

Almost surely, 2^{1022021010021} is an apocalyptic number.

1022021010021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1022021010021 is a deficient number, since it is larger than the sum of its proper divisors (477710549979).

1022021010021 is a wasteful number, since it uses less digits than its factorization.

1022021010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274073876.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1022021010021 its reverse (1200101202201), we get a palindrome (2222122212222).

The spelling of 1022021010021 in words is "one trillion, twenty-two billion, twenty-one million, ten thousand, twenty-one".