1202211011251 has 2 divisors, whose sum is σ = 1202211011252. Its totient is φ = 1202211011250.

The previous prime is 1202211011069. The next prime is 1202211011257. The reversal of 1202211011251 is 1521101122021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1202211011251 - 2⁹ = 1202211010739 is a prime.

It is a super-2 number, since 2×1202211011251² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1202211011257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601105505625 + 601105505626.

It is an arithmetic number, because the mean of its divisors is an integer number (601105505626).

Almost surely, 2^{1202211011251} is an apocalyptic number.

1202211011251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202211011251 is an equidigital number, since it uses as much as digits as its factorization.

1202211011251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 19.

Adding to 1202211011251 its reverse (1521101122021), we get a palindrome (2723312133272).

The spelling of 1202211011251 in words is "one trillion, two hundred two billion, two hundred eleven million, eleven thousand, two hundred fifty-one".