222012121000 has 32 divisors (see below), whose sum is σ = 519508365480. Its totient is φ = 88804848000.

The previous prime is 222012120989. The next prime is 222012121007. The reversal of 222012121000 is 121210222.

It is a happy number.

222012121000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 137787955204 + 84224165796 = 371198^2 + 290214^2 .

It is not an unprimeable number, because it can be changed into a prime (222012121007) 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, 111005061 + ... + 111007060.

Almost surely, 2^222012121000 is an apocalyptic number.

222012121000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222012121000 is an abundant number, since it is smaller than the sum of its proper divisors (297496244480).

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

222012121000 is a wasteful number, since it uses less digits than its factorization.

222012121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222012142 (or 222012128 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 222012121000 its reverse (121210222), we get a palindrome (222133331222).

The spelling of 222012121000 in words is "two hundred twenty-two billion, twelve million, one hundred twenty-one thousand".