220821806948 has 12 divisors (see below), whose sum is σ = 386690581872. Its totient is φ = 110338783560.

The previous prime is 220821806903. The next prime is 220821806951. The reversal of 220821806948 is 849608128022.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 220821806896 and 220821806905.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18023090 + ... + 18035337.

It is an arithmetic number, because the mean of its divisors is an integer number (32224215156).

Almost surely, 2^220821806948 is an apocalyptic number.

It is an amenable number.

220821806948 is a deficient number, since it is larger than the sum of its proper divisors (165868774924).

220821806948 is a wasteful number, since it uses less digits than its factorization.

220821806948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36059962 (or 36059960 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 50.

The spelling of 220821806948 in words is "two hundred twenty billion, eight hundred twenty-one million, eight hundred six thousand, nine hundred forty-eight".