101220611229 has 64 divisors (see below), whose sum is σ = 161790182400. Its totient is φ = 62337594816.

The previous prime is 101220611201. The next prime is 101220611231. The reversal of 101220611229 is 922116022101.

101220611229 is a `hidden beast` number, since 1 + 0 + 1 + 2 + 20 + 611 + 2 + 29 = 666.

It is not a de Polignac number, because 101220611229 - 2⁹ = 101220610717 is a prime.

It is a super-2 number, since 2×101220611229² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101220618229) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14401014 + ... + 14408040.

It is an arithmetic number, because the mean of its divisors is an integer number (2527971600).

Almost surely, 2^101220611229 is an apocalyptic number.

101220611229 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

101220611229 is a deficient number, since it is larger than the sum of its proper divisors (60569571171).

101220611229 is a wasteful number, since it uses less digits than its factorization.

101220611229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7751 (or 7745 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The spelling of 101220611229 in words is "one hundred one billion, two hundred twenty million, six hundred eleven thousand, two hundred twenty-nine".