100621220330404 has 6 divisors (see below), whose sum is σ = 176087135578214. Its totient is φ = 50310610165200.

The previous prime is 100621220330399. The next prime is 100621220330453. The reversal of 100621220330404 is 404033022126001.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 90192971012004 + 10428249318400 = 9496998^2 + 3229280^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12577652541297 + ... + 12577652541304.

Almost surely, 2^{100621220330404} is an apocalyptic number.

It is an amenable number.

100621220330404 is a deficient number, since it is larger than the sum of its proper divisors (75465915247810).

100621220330404 is a wasteful number, since it uses less digits than its factorization.

100621220330404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25155305082605 (or 25155305082603 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 100621220330404 its reverse (404033022126001), we get a palindrome (504654242456405).

The spelling of 100621220330404 in words is "one hundred trillion, six hundred twenty-one billion, two hundred twenty million, three hundred thirty thousand, four hundred four".