201121423102 has 16 divisors (see below), whose sum is σ = 327804019200. Its totient is φ = 92194879320.

The previous prime is 201121423093. The next prime is 201121423187. The reversal of 201121423102 is 201324121102.

It is a super-3 number, since 3×201121423102³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 201121423102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85364452 + ... + 85366807.

It is an arithmetic number, because the mean of its divisors is an integer number (20487751200).

Almost surely, 2^201121423102 is an apocalyptic number.

201121423102 is a deficient number, since it is larger than the sum of its proper divisors (126682596098).

201121423102 is a wasteful number, since it uses less digits than its factorization.

201121423102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170731311.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 201121423102 its reverse (201324121102), we get a palindrome (402445544204).

The spelling of 201121423102 in words is "two hundred one billion, one hundred twenty-one million, four hundred twenty-three thousand, one hundred two".