201001022121 has 8 divisors (see below), whose sum is σ = 268374107520. Its totient is φ = 133814309072.

The previous prime is 201001022099. The next prime is 201001022137. The reversal of 201001022121 is 121220100102.

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 201001022121 - 2²² = 200996827817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201001022097 and 201001022106.

It is not an unprimeable number, because it can be changed into a prime (201001022161) 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, 46590570 + ... + 46594883.

It is an arithmetic number, because the mean of its divisors is an integer number (33546763440).

Almost surely, 2^201001022121 is an apocalyptic number.

It is an amenable number.

201001022121 is a deficient number, since it is larger than the sum of its proper divisors (67373085399).

201001022121 is an equidigital number, since it uses as much as digits as its factorization.

201001022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93186175.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 201001022121 its reverse (121220100102), we get a palindrome (322221122223).

The spelling of 201001022121 in words is "two hundred one billion, one million, twenty-two thousand, one hundred twenty-one".