100021011229 has 2 divisors, whose sum is σ = 100021011230. Its totient is φ = 100021011228.

The previous prime is 100021011217. The next prime is 100021011289. The reversal of 100021011229 is 922110120001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100001412900 + 19598329 = 316230^2 + 4427^2 .

It is a cyclic number.

It is not a de Polignac number, because 100021011229 - 2⁵ = 100021011197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100021011289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50010505614 + 50010505615.

It is an arithmetic number, because the mean of its divisors is an integer number (50010505615).

Almost surely, 2^100021011229 is an apocalyptic number.

It is an amenable number.

100021011229 is a deficient number, since it is larger than the sum of its proper divisors (1).

100021011229 is an equidigital number, since it uses as much as digits as its factorization.

100021011229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 100021011229 in words is "one hundred billion, twenty-one million, eleven thousand, two hundred twenty-nine".