101221130999 has 2 divisors, whose sum is σ = 101221131000. Its totient is φ = 101221130998.

The previous prime is 101221130987. The next prime is 101221131061. The reversal of 101221130999 is 999031122101.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101221130999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101221130929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610565499 + 50610565500.

It is an arithmetic number, because the mean of its divisors is an integer number (50610565500).

Almost surely, 2^101221130999 is an apocalyptic number.

101221130999 is a deficient number, since it is larger than the sum of its proper divisors (1).

101221130999 is an equidigital number, since it uses as much as digits as its factorization.

101221130999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 38.

The spelling of 101221130999 in words is "one hundred one billion, two hundred twenty-one million, one hundred thirty thousand, nine hundred ninety-nine".