222220002122100 has 216 divisors, whose sum is σ = 746464234064640. Its totient is φ = 55150251805440.

The previous prime is 222220002122089. The next prime is 222220002122159. The reversal of 222220002122100 is 1221200022222.

222220002122100 is a `hidden beast` number, since 2 + 22 + 220 + 0 + 0 + 212 + 210 + 0 = 666.

It is a super-2 number, since 2×222220002122100² (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 an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 144305260 + ... + 145837059.

Almost surely, 2^{222220002122100} is an apocalyptic number.

222220002122100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222220002122100 is an abundant number, since it is smaller than the sum of its proper divisors (524244231942540).

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

222220002122100 is a wasteful number, since it uses less digits than its factorization.

222220002122100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290142399 (or 290142389 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 222220002122100 its reverse (1221200022222), we get a palindrome (223441202144322).

The spelling of 222220002122100 in words is "two hundred twenty-two trillion, two hundred twenty billion, two million, one hundred twenty-two thousand, one hundred".