2102023020001 has 4 divisors (see below), whose sum is σ = 2158834453012. Its totient is φ = 2045211586992.

The previous prime is 2102023019933. The next prime is 2102023020007. The reversal of 2102023020001 is 1000203202012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1038206117776 + 1063816902225 = 1018924^2 + 1031415^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102023020001 - 2⁹ = 2102023019489 is a prime.

It is a super-2 number, since 2×2102023020001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102023020007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28405716450 + ... + 28405716523.

It is an arithmetic number, because the mean of its divisors is an integer number (539708613253).

Almost surely, 2^{2102023020001} is an apocalyptic number.

It is an amenable number.

2102023020001 is a deficient number, since it is larger than the sum of its proper divisors (56811433011).

2102023020001 is an equidigital number, since it uses as much as digits as its factorization.

2102023020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56811433010.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 2102023020001 its reverse (1000203202012), we get a palindrome (3102226222013).

The spelling of 2102023020001 in words is "two trillion, one hundred two billion, twenty-three million, twenty thousand, one".