101220009629 has 2 divisors, whose sum is σ = 101220009630. Its totient is φ = 101220009628.

The previous prime is 101220009623. The next prime is 101220009679. The reversal of 101220009629 is 926900022101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79819245529 + 21400764100 = 282523^2 + 146290^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101220009629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101220009595 and 101220009604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101220009623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610004814 + 50610004815.

It is an arithmetic number, because the mean of its divisors is an integer number (50610004815).

Almost surely, 2^101220009629 is an apocalyptic number.

It is an amenable number.

101220009629 is a deficient number, since it is larger than the sum of its proper divisors (1).

101220009629 is an equidigital number, since it uses as much as digits as its factorization.

101220009629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 32.

The spelling of 101220009629 in words is "one hundred one billion, two hundred twenty million, nine thousand, six hundred twenty-nine".