20212133121201 has 16 divisors (see below), whose sum is σ = 30806539366400. Its totient is φ = 11547128447568.

The previous prime is 20212133121199. The next prime is 20212133121247. The reversal of 20212133121201 is 10212133121202.

It is not a de Polignac number, because 20212133121201 - 2¹ = 20212133121199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (20212133121701) 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, 110819521 + ... + 111001758.

It is an arithmetic number, because the mean of its divisors is an integer number (1925408710400).

Almost surely, 2^{20212133121201} is an apocalyptic number.

20212133121201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20212133121201 is a deficient number, since it is larger than the sum of its proper divisors (10594406245199).

20212133121201 is a wasteful number, since it uses less digits than its factorization.

20212133121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221825628.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 20212133121201 its reverse (10212133121202), we get a palindrome (30424266242403).

Subtracting from 20212133121201 its reverse (10212133121202), we obtain a palindrome (9999999999999).

The spelling of 20212133121201 in words is "twenty trillion, two hundred twelve billion, one hundred thirty-three million, one hundred twenty-one thousand, two hundred one".