1211117936051 has 2 divisors, whose sum is σ = 1211117936052. Its totient is φ = 1211117936050.

The previous prime is 1211117936047. The next prime is 1211117936053. The reversal of 1211117936051 is 1506397111121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1211117936051 - 2² = 1211117936047 is a prime.

Together with 1211117936053, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1211117935996 and 1211117936014.

It is not a weakly prime, because it can be changed into another prime (1211117936053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605558968025 + 605558968026.

It is an arithmetic number, because the mean of its divisors is an integer number (605558968026).

Almost surely, 2^{1211117936051} is an apocalyptic number.

1211117936051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211117936051 is an equidigital number, since it uses as much as digits as its factorization.

1211117936051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 38.

The spelling of 1211117936051 in words is "one trillion, two hundred eleven billion, one hundred seventeen million, nine hundred thirty-six thousand, fifty-one".