221038396998 has 16 divisors (see below), whose sum is σ = 465343993920. Its totient is φ = 69801599016.

The previous prime is 221038396961. The next prime is 221038397009. The reversal of 221038396998 is 899693830122.

It is a Curzon number.

It is a congruent number.

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, 969466540 + ... + 969466767.

It is an arithmetic number, because the mean of its divisors is an integer number (29083999620).

Almost surely, 2^221038396998 is an apocalyptic number.

221038396998 is an abundant number, since it is smaller than the sum of its proper divisors (244305596922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221038396998 is a wasteful number, since it uses less digits than its factorization.

221038396998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1938933331.

The product of its (nonzero) digits is 10077696, while the sum is 60.

The spelling of 221038396998 in words is "two hundred twenty-one billion, thirty-eight million, three hundred ninety-six thousand, nine hundred ninety-eight".