101220618229 has 2 divisors, whose sum is σ = 101220618230. Its totient is φ = 101220618228.

The previous prime is 101220618211. The next prime is 101220618251. The reversal of 101220618229 is 922816022101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74709288900 + 26511329329 = 273330^2 + 162823^2 .

It is a cyclic number.

It is not a de Polignac number, because 101220618229 - 2⁵ = 101220618197 is a prime.

It is a super-2 number, since 2×101220618229² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101220618194 and 101220618203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101220619229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610309114 + 50610309115.

It is an arithmetic number, because the mean of its divisors is an integer number (50610309115).

Almost surely, 2^101220618229 is an apocalyptic number.

It is an amenable number.

101220618229 is a deficient number, since it is larger than the sum of its proper divisors (1).

101220618229 is an equidigital number, since it uses as much as digits as its factorization.

101220618229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 34.

The spelling of 101220618229 in words is "one hundred one billion, two hundred twenty million, six hundred eighteen thousand, two hundred twenty-nine".