221012020332 has 18 divisors (see below), whose sum is σ = 558669273708. Its totient is φ = 73670673432.

The previous prime is 221012020319. The next prime is 221012020351. The reversal of 221012020332 is 233020210122.

221012020332 is a `hidden beast` number, since 2 + 210 + 120 + 2 + 0 + 332 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3069611358 + ... + 3069611429.

Almost surely, 2^221012020332 is an apocalyptic number.

It is an amenable number.

221012020332 is an abundant number, since it is smaller than the sum of its proper divisors (337657253376).

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

221012020332 is a wasteful number, since it uses less digits than its factorization.

221012020332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6139222797 (or 6139222792 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 221012020332 its reverse (233020210122), we get a palindrome (454032230454).

The spelling of 221012020332 in words is "two hundred twenty-one billion, twelve million, twenty thousand, three hundred thirty-two".