201222121001021 has 8 divisors (see below), whose sum is σ = 208056426004224. Its totient is φ = 194479551635680.

The previous prime is 201222121000981. The next prime is 201222121001081. The reversal of 201222121001021 is 120100121222102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201222121001021 - 2²² = 201222116806717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201222121001081) 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, 22933905005 + ... + 22933913778.

It is an arithmetic number, because the mean of its divisors is an integer number (26007053250528).

Almost surely, 2^{201222121001021} is an apocalyptic number.

It is an amenable number.

201222121001021 is a deficient number, since it is larger than the sum of its proper divisors (6834305003203).

201222121001021 is a wasteful number, since it uses less digits than its factorization.

201222121001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45867818931.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 201222121001021 its reverse (120100121222102), we get a palindrome (321322242223123).

The spelling of 201222121001021 in words is "two hundred one trillion, two hundred twenty-two billion, one hundred twenty-one million, one thousand, twenty-one".