1212021110051 has 2 divisors, whose sum is σ = 1212021110052. Its totient is φ = 1212021110050.

The previous prime is 1212021109997. The next prime is 1212021110059. The reversal of 1212021110051 is 1500111202121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212021110051 - 2²⁶ = 1211954001187 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212021110059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606010555025 + 606010555026.

It is an arithmetic number, because the mean of its divisors is an integer number (606010555026).

Almost surely, 2^{1212021110051} is an apocalyptic number.

1212021110051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212021110051 is an equidigital number, since it uses as much as digits as its factorization.

1212021110051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40, while the sum is 17.

Adding to 1212021110051 its reverse (1500111202121), we get a palindrome (2712132312172).

The spelling of 1212021110051 in words is "one trillion, two hundred twelve billion, twenty-one million, one hundred ten thousand, fifty-one".