222212011021 has 48 divisors (see below), whose sum is σ = 303592754304. Its totient is φ = 158249520000.

The previous prime is 222212011003. The next prime is 222212011051. The reversal of 222212011021 is 120110212222.

It is a happy number.

It is not a de Polignac number, because 222212011021 - 2¹⁷ = 222211879949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222212010986 and 222212011004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222212011051) 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, 1012206 + ... + 1212016.

It is an arithmetic number, because the mean of its divisors is an integer number (6324849048).

Almost surely, 2^222212011021 is an apocalyptic number.

It is an amenable number.

222212011021 is a deficient number, since it is larger than the sum of its proper divisors (81380743283).

222212011021 is a wasteful number, since it uses less digits than its factorization.

222212011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199954 (or 199943 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 222212011021 its reverse (120110212222), we get a palindrome (342322223243).

It can be divided in two parts, 22221201 and 1021, that added together give a palindrome (22222222).

The spelling of 222212011021 in words is "two hundred twenty-two billion, two hundred twelve million, eleven thousand, twenty-one".