222121021001 has 32 divisors (see below), whose sum is σ = 249977145600. Its totient is φ = 195673927680.

The previous prime is 222121020991. The next prime is 222121021019. The reversal of 222121021001 is 100120121222.

It is not a de Polignac number, because 222121021001 - 2⁶ = 222121020937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222121021081) 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, 9769835 + ... + 9792543.

It is an arithmetic number, because the mean of its divisors is an integer number (7811785800).

Almost surely, 2^222121021001 is an apocalyptic number.

It is an amenable number.

222121021001 is a deficient number, since it is larger than the sum of its proper divisors (27856124599).

222121021001 is a wasteful number, since it uses less digits than its factorization.

222121021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23009.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 222121021001 its reverse (100120121222), we get a palindrome (322241142223).

The spelling of 222121021001 in words is "two hundred twenty-two billion, one hundred twenty-one million, twenty-one thousand, one".