1020010202001 has 24 divisors (see below), whose sum is σ = 1684056813504. Its totient is φ = 582783202080.

The previous prime is 1020010201999. The next prime is 1020010202039. The reversal of 1020010202001 is 1002020100201.

It is not a de Polignac number, because 1020010202001 - 2¹ = 1020010201999 is a prime.

It is a super-2 number, since 2×1020010202001² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1020010202501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 642406 + ... + 1566111.

It is an arithmetic number, because the mean of its divisors is an integer number (70169033896).

Almost surely, 2^{1020010202001} is an apocalyptic number.

It is an amenable number.

1020010202001 is a deficient number, since it is larger than the sum of its proper divisors (664046611503).

1020010202001 is a wasteful number, since it uses less digits than its factorization.

1020010202001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2215861 (or 2215858 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1020010202001 its reverse (1002020100201), we get a palindrome (2022030302202).

The spelling of 1020010202001 in words is "one trillion, twenty billion, ten million, two hundred two thousand, one".