102220022221991 has 2 divisors, whose sum is σ = 102220022221992. Its totient is φ = 102220022221990.

The previous prime is 102220022221951. The next prime is 102220022222119. The reversal of 102220022221991 is 199122220022201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102220022221991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102220022221901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51110011110995 + 51110011110996.

It is an arithmetic number, because the mean of its divisors is an integer number (51110011110996).

Almost surely, 2^{102220022221991} is an apocalyptic number.

102220022221991 is a deficient number, since it is larger than the sum of its proper divisors (1).

102220022221991 is an equidigital number, since it uses as much as digits as its factorization.

102220022221991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 35.

The spelling of 102220022221991 in words is "one hundred two trillion, two hundred twenty billion, twenty-two million, two hundred twenty-one thousand, nine hundred ninety-one".