1021002122002 has 8 divisors (see below), whose sum is σ = 1572895161036. Its totient is φ = 496703734992.

The previous prime is 1021002121999. The next prime is 1021002122011. The reversal of 1021002122002 is 2002212001201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1012094348841 + 8907773161 = 1006029^2 + 94381^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6898662913 + ... + 6898663060.

Almost surely, 2^{1021002122002} is an apocalyptic number.

1021002122002 is a deficient number, since it is larger than the sum of its proper divisors (551893039034).

1021002122002 is a wasteful number, since it uses less digits than its factorization.

1021002122002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13797326012.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1021002122002 its reverse (2002212001201), we get a palindrome (3023214123203).

The spelling of 1021002122002 in words is "one trillion, twenty-one billion, two million, one hundred twenty-two thousand, two".