1021202022001 has 12 divisors (see below), whose sum is σ = 1168377184576. Its totient is φ = 874350214920.

The previous prime is 1021202021993. The next prime is 1021202022037. The reversal of 1021202022001 is 1002202021201.

It is a happy number.

It is not a de Polignac number, because 1021202022001 - 2³ = 1021202021993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1021202022301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5721556 + ... + 5897338.

Almost surely, 2^{1021202022001} is an apocalyptic number.

It is an amenable number.

1021202022001 is a deficient number, since it is larger than the sum of its proper divisors (147175162575).

1021202022001 is an frugal number, since it uses more digits than its factorization.

1021202022001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177612 (or 176701 counting only the distinct ones).

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

Adding to 1021202022001 its reverse (1002202021201), we get a palindrome (2023404043202).

The spelling of 1021202022001 in words is "one trillion, twenty-one billion, two hundred two million, twenty-two thousand, one".