201112102101021 has 8 divisors (see below), whose sum is σ = 277396002898080. Its totient is φ = 129451468018992.

The previous prime is 201112102100971. The next prime is 201112102101047. The reversal of 201112102101021 is 120101201211102.

It is a happy number.

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

It is not a de Polignac number, because 201112102101021 - 2¹⁴ = 201112102084637 is a prime.

It is a super-2 number, since 2×201112102101021² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201112102101091) 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, 1155816678655 + ... + 1155816678828.

It is an arithmetic number, because the mean of its divisors is an integer number (34674500362260).

Almost surely, 2^{201112102101021} is an apocalyptic number.

It is an amenable number.

201112102101021 is a deficient number, since it is larger than the sum of its proper divisors (76283900797059).

201112102101021 is a wasteful number, since it uses less digits than its factorization.

201112102101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2311633357515.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 201112102101021 its reverse (120101201211102), we get a palindrome (321213303312123).

The spelling of 201112102101021 in words is "two hundred one trillion, one hundred twelve billion, one hundred two million, one hundred one thousand, twenty-one".