1021122210021 has 32 divisors (see below), whose sum is σ = 1458868793088. Its totient is φ = 633872701440.

The previous prime is 1021122209963. The next prime is 1021122210023. The reversal of 1021122210021 is 1200122211201.

It is not a de Polignac number, because 1021122210021 - 2⁶ = 1021122209957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021122210023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 842266 + ... + 1658811.

It is an arithmetic number, because the mean of its divisors is an integer number (45589649784).

Almost surely, 2^{1021122210021} is an apocalyptic number.

It is an amenable number.

1021122210021 is a deficient number, since it is larger than the sum of its proper divisors (437746583067).

1021122210021 is a wasteful number, since it uses less digits than its factorization.

1021122210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2501261.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1021122210021 its reverse (1200122211201), we get a palindrome (2221244421222).

The spelling of 1021122210021 in words is "one trillion, twenty-one billion, one hundred twenty-two million, two hundred ten thousand, twenty-one".