221222021031000 has 192 divisors, whose sum is σ = 815705925184800. Its totient is φ = 53629580832000.

The previous prime is 221222021030963. The next prime is 221222021031007. The reversal of 221222021031000 is 130120222122.

221222021031000 is a `hidden beast` number, since 2 + 2 + 122 + 20 + 210 + 310 + 0 + 0 = 666.

221222021031000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221222021031000² (a number of 29 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221222021031007) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1117183935 + ... + 1117381934.

Almost surely, 2^{221222021031000} is an apocalyptic number.

221222021031000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221222021031000 is an abundant number, since it is smaller than the sum of its proper divisors (594483904153800).

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

221222021031000 is a wasteful number, since it uses less digits than its factorization.

221222021031000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2234565907 (or 2234565890 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 221222021031000 its reverse (130120222122), we get a palindrome (221352141253122).

The spelling of 221222021031000 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, twenty-one million, thirty-one thousand".