222220021031 has 8 divisors (see below), whose sum is σ = 235307021760. Its totient is φ = 209134713088.

The previous prime is 222220020983. The next prime is 222220021057. The reversal of 222220021031 is 130120022222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222220021031 is a prime.

It is a super-2 number, since 2×222220021031² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222220027031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147791 + ... + 682848.

It is an arithmetic number, because the mean of its divisors is an integer number (29413377720).

Almost surely, 2^222220021031 is an apocalyptic number.

222220021031 is a deficient number, since it is larger than the sum of its proper divisors (13087000729).

222220021031 is a wasteful number, since it uses less digits than its factorization.

222220021031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846393.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 222220021031 its reverse (130120022222), we get a palindrome (352340043253).

The spelling of 222220021031 in words is "two hundred twenty-two billion, two hundred twenty million, twenty-one thousand, thirty-one".