20201102020090 has 16 divisors (see below), whose sum is σ = 36722003277960. Its totient is φ = 8000436443200.

The previous prime is 20201102020079. The next prime is 20201102020103. The reversal of 20201102020090 is 9002020110202.

It can be written as a sum of positive squares in 4 ways, for example, as 19544825428209 + 656276591881 = 4420953^2 + 810109^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10000544545 + ... + 10000546564.

Almost surely, 2^{20201102020090} is an apocalyptic number.

20201102020090 is a deficient number, since it is larger than the sum of its proper divisors (16520901257870).

20201102020090 is a wasteful number, since it uses less digits than its factorization.

20201102020090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20001091217.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 20201102020090 its reverse (9002020110202), we get a palindrome (29203122130292).

The spelling of 20201102020090 in words is "twenty trillion, two hundred one billion, one hundred two million, twenty thousand, ninety".