222101121212011 has 16 divisors (see below), whose sum is σ = 235260491356800. Its totient is φ = 209092642818048.

The previous prime is 222101121211933. The next prime is 222101121212021. The reversal of 222101121212011 is 110212121101222.

It is a happy number.

It is not a de Polignac number, because 222101121212011 - 2⁹ = 222101121211499 is a prime.

It is a super-2 number, since 2×222101121212011² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222101121212011.

It is not an unprimeable number, because it can be changed into a prime (222101121212021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52231545 + ... + 56323498.

It is an arithmetic number, because the mean of its divisors is an integer number (14703780709800).

Almost surely, 2^{222101121212011} is an apocalyptic number.

222101121212011 is a deficient number, since it is larger than the sum of its proper divisors (13159370144789).

222101121212011 is a wasteful number, since it uses less digits than its factorization.

222101121212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108555738.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 222101121212011 its reverse (110212121101222), we get a palindrome (332313242313233).

The spelling of 222101121212011 in words is "two hundred twenty-two trillion, one hundred one billion, one hundred twenty-one million, two hundred twelve thousand, eleven".