2120212121051 has 2 divisors, whose sum is σ = 2120212121052. Its totient is φ = 2120212121050.

The previous prime is 2120212121039. The next prime is 2120212121081. The reversal of 2120212121051 is 1501212120212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120212121051 is a prime.

It is not a weakly prime, because it can be changed into another prime (2120212121081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060106060525 + 1060106060526.

It is an arithmetic number, because the mean of its divisors is an integer number (1060106060526).

Almost surely, 2^{2120212121051} is an apocalyptic number.

2120212121051 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120212121051 is an equidigital number, since it uses as much as digits as its factorization.

2120212121051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 20.

Adding to 2120212121051 its reverse (1501212120212), we get a palindrome (3621424241263).

The spelling of 2120212121051 in words is "two trillion, one hundred twenty billion, two hundred twelve million, one hundred twenty-one thousand, fifty-one".