222001121202121 has 32 divisors (see below), whose sum is σ = 230442722205696. Its totient is φ = 213643352736000.

The previous prime is 222001121202023. The next prime is 222001121202131. The reversal of 222001121202121 is 121202121100222.

It is not a de Polignac number, because 222001121202121 - 2⁹ = 222001121201609 is a prime.

It is a super-2 number, since 2×222001121202121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222001121202131) 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, 8040300606 + ... + 8040328216.

It is an arithmetic number, because the mean of its divisors is an integer number (7201335068928).

Almost surely, 2^{222001121202121} is an apocalyptic number.

It is an amenable number.

222001121202121 is a deficient number, since it is larger than the sum of its proper divisors (8441601003575).

222001121202121 is a wasteful number, since it uses less digits than its factorization.

222001121202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29893.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 222001121202121 its reverse (121202121100222), we get a palindrome (343203242302343).

The spelling of 222001121202121 in words is "two hundred twenty-two trillion, one billion, one hundred twenty-one million, two hundred two thousand, one hundred twenty-one".