221031132030 has 24 divisors (see below), whose sum is σ = 574680943512. Its totient is φ = 58941635184.

The previous prime is 221031132029. The next prime is 221031132053. The reversal of 221031132030 is 30231130122.

221031132030 is a `hidden beast` number, since 2 + 2 + 1 + 0 + 311 + 320 + 30 = 666.

It is a super-2 number, since 2×221031132030² (a number of 23 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 221031131994 and 221031132012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1227950644 + ... + 1227950823.

It is an arithmetic number, because the mean of its divisors is an integer number (23945039313).

Almost surely, 2^221031132030 is an apocalyptic number.

221031132030 is an abundant number, since it is smaller than the sum of its proper divisors (353649811482).

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

221031132030 is a wasteful number, since it uses less digits than its factorization.

221031132030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2455901480 (or 2455901477 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 221031132030 its reverse (30231130122), we get a palindrome (251262262152).

The spelling of 221031132030 in words is "two hundred twenty-one billion, thirty-one million, one hundred thirty-two thousand, thirty".