20132210121 has 4 divisors (see below), whose sum is σ = 26842946832. Its totient is φ = 13421473412.

The previous prime is 20132210117. The next prime is 20132210141. The reversal of 20132210121 is 12101223102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20132210121 - 2² = 20132210117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20132210121.

It is not an unprimeable number, because it can be changed into a prime (20132210141) 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, 3355368351 + ... + 3355368356.

It is an arithmetic number, because the mean of its divisors is an integer number (6710736708).

Almost surely, 2^20132210121 is an apocalyptic number.

It is an amenable number.

20132210121 is a deficient number, since it is larger than the sum of its proper divisors (6710736711).

20132210121 is an equidigital number, since it uses as much as digits as its factorization.

20132210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6710736710.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20132210121 its reverse (12101223102), we get a palindrome (32233433223).

The spelling of 20132210121 in words is "twenty billion, one hundred thirty-two million, two hundred ten thousand, one hundred twenty-one".