121022012100111 has 32 divisors (see below), whose sum is σ = 165676558367232. Its totient is φ = 78537262003200.

The previous prime is 121022012100091. The next prime is 121022012100137. The reversal of 121022012100111 is 111001210220121.

It is a happy number.

It is not a de Polignac number, because 121022012100111 - 2¹³ = 121022012091919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121022012100181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199603831 + ... + 200209223.

It is an arithmetic number, because the mean of its divisors is an integer number (5177392448976).

Almost surely, 2^{121022012100111} is an apocalyptic number.

121022012100111 is a deficient number, since it is larger than the sum of its proper divisors (44654546267121).

121022012100111 is a wasteful number, since it uses less digits than its factorization.

121022012100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610703.

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

Adding to 121022012100111 its reverse (111001210220121), we get a palindrome (232023222320232).

The spelling of 121022012100111 in words is "one hundred twenty-one trillion, twenty-two billion, twelve million, one hundred thousand, one hundred eleven".