1021122002121 has 8 divisors (see below), whose sum is σ = 1466226464640. Its totient is φ = 628382770512.

The previous prime is 1021122002093. The next prime is 1021122002123. The reversal of 1021122002121 is 1212002211201.

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

It is not a de Polignac number, because 1021122002121 - 2¹⁵ = 1021121969353 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1021122002121.

It is not an unprimeable number, because it can be changed into a prime (1021122002123) 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, 13091307681 + ... + 13091307758.

It is an arithmetic number, because the mean of its divisors is an integer number (183278308080).

Almost surely, 2^{1021122002121} is an apocalyptic number.

It is an amenable number.

1021122002121 is a deficient number, since it is larger than the sum of its proper divisors (445104462519).

1021122002121 is a wasteful number, since it uses less digits than its factorization.

1021122002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26182615455.

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

Adding to 1021122002121 its reverse (1212002211201), we get a palindrome (2233124213322).

The spelling of 1021122002121 in words is "one trillion, twenty-one billion, one hundred twenty-two million, two thousand, one hundred twenty-one".