20200121001201 has 16 divisors (see below), whose sum is σ = 28187912398464. Its totient is φ = 12843013311744.

The previous prime is 20200121001133. The next prime is 20200121001209. The reversal of 20200121001201 is 10210012100202.

It is not a de Polignac number, because 20200121001201 - 2³⁵ = 20165761262833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20200121001209) 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, 434331906 + ... + 434378411.

It is an arithmetic number, because the mean of its divisors is an integer number (1761744524904).

Almost surely, 2^{20200121001201} is an apocalyptic number.

It is an amenable number.

20200121001201 is a deficient number, since it is larger than the sum of its proper divisors (7987791397263).

20200121001201 is a wasteful number, since it uses less digits than its factorization.

20200121001201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868710680.

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

Adding to 20200121001201 its reverse (10210012100202), we get a palindrome (30410133101403).

The spelling of 20200121001201 in words is "twenty trillion, two hundred billion, one hundred twenty-one million, one thousand, two hundred one".