201121210020110 has 32 divisors (see below), whose sum is σ = 365604851459232. Its totient is φ = 79651455644800.

The previous prime is 201121210020013. The next prime is 201121210020149. The reversal of 201121210020110 is 11020012121102.

It is a super-2 number, since 2×201121210020110² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184151204 + ... + 185240136.

It is an arithmetic number, because the mean of its divisors is an integer number (11425151608101).

Almost surely, 2^{201121210020110} is an apocalyptic number.

201121210020110 is a deficient number, since it is larger than the sum of its proper divisors (164483641439122).

201121210020110 is a wasteful number, since it uses less digits than its factorization.

201121210020110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271908.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 201121210020110 its reverse (11020012121102), we get a palindrome (212141222141212).

The spelling of 201121210020110 in words is "two hundred one trillion, one hundred twenty-one billion, two hundred ten million, twenty thousand, one hundred ten".