101220135404 has 24 divisors (see below), whose sum is σ = 187871313168. Its totient is φ = 47552660480.

The previous prime is 101220135343. The next prime is 101220135427. The reversal of 101220135404 is 404531022101.

101220135404 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×101220135404² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 101220135404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1214762 + ... + 1295409.

It is an arithmetic number, because the mean of its divisors is an integer number (7827971382).

Almost surely, 2^101220135404 is an apocalyptic number.

It is an amenable number.

101220135404 is a deficient number, since it is larger than the sum of its proper divisors (86651177764).

101220135404 is a wasteful number, since it uses less digits than its factorization.

101220135404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2510785 (or 2510783 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 101220135404 its reverse (404531022101), we get a palindrome (505751157505).

The spelling of 101220135404 in words is "one hundred one billion, two hundred twenty million, one hundred thirty-five thousand, four hundred four".