20010021021201 has 16 divisors (see below), whose sum is σ = 28490352514560. Its totient is φ = 12464529221760.

The previous prime is 20010021021169. The next prime is 20010021021209. The reversal of 20010021021201 is 10212012001002.

It is not a de Polignac number, because 20010021021201 - 2⁵ = 20010021021169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20010021021209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3709678620 + ... + 3709684013.

It is an arithmetic number, because the mean of its divisors is an integer number (1780647032160).

Almost surely, 2^{20010021021201} is an apocalyptic number.

It is an amenable number.

20010021021201 is a deficient number, since it is larger than the sum of its proper divisors (8480331493359).

20010021021201 is a wasteful number, since it uses less digits than its factorization.

20010021021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7419362696.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20010021021201 its reverse (10212012001002), we get a palindrome (30222033022203).

It can be divided in two parts, 2001002 and 1021201, that multiplied together give a palindrome (2043425243402).

The spelling of 20010021021201 in words is "twenty trillion, ten billion, twenty-one million, twenty-one thousand, two hundred one".