20120222118121 has 2 divisors, whose sum is σ = 20120222118122. Its totient is φ = 20120222118120.

The previous prime is 20120222118107. The next prime is 20120222118133. The reversal of 20120222118121 is 12181122202102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13292871191721 + 6827350926400 = 3645939^2 + 2612920^2 .

It is a cyclic number.

It is not a de Polignac number, because 20120222118121 - 2²⁹ = 20119685247209 is a prime.

It is not a weakly prime, because it can be changed into another prime (20120222119121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060111059060 + 10060111059061.

It is an arithmetic number, because the mean of its divisors is an integer number (10060111059061).

Almost surely, 2^{20120222118121} is an apocalyptic number.

It is an amenable number.

20120222118121 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120222118121 is an equidigital number, since it uses as much as digits as its factorization.

20120222118121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 25.

The spelling of 20120222118121 in words is "twenty trillion, one hundred twenty billion, two hundred twenty-two million, one hundred eighteen thousand, one hundred twenty-one".