222011212121001 has 32 divisors (see below), whose sum is σ = 330310100736000. Its totient is φ = 147376744741584.

The previous prime is 222011212120933. The next prime is 222011212121011. The reversal of 222011212121001 is 100121212110222.

222011212121001 is a `hidden beast` number, since 2 + 220 + 112 + 121 + 210 + 0 + 1 = 666.

It is not a de Polignac number, because 222011212121001 - 2¹⁵ = 222011212088233 is a prime.

It is a super-2 number, since 2×222011212121001² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (222011212121011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12656611 + ... + 24580728.

It is an arithmetic number, because the mean of its divisors is an integer number (10322190648000).

Almost surely, 2^{222011212121001} is an apocalyptic number.

It is an amenable number.

222011212121001 is a deficient number, since it is larger than the sum of its proper divisors (108298888614999).

222011212121001 is a wasteful number, since it uses less digits than its factorization.

222011212121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37238290 (or 37238284 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 222011212121001 its reverse (100121212110222), we get a palindrome (322132424231223).

The spelling of 222011212121001 in words is "two hundred twenty-two trillion, eleven billion, two hundred twelve million, one hundred twenty-one thousand, one".