121200111201110 has 16 divisors (see below), whose sum is σ = 218467901444400. Its totient is φ = 48411666417696.

The previous prime is 121200111201079. The next prime is 121200111201187. The reversal of 121200111201110 is 11102111002121.

It is a super-2 number, since 2×121200111201110² (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 7 ways as a sum of consecutive naturals, for example, 8547250400 + ... + 8547264579.

It is an arithmetic number, because the mean of its divisors is an integer number (13654243840275).

Almost surely, 2^{121200111201110} is an apocalyptic number.

121200111201110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121200111201110 is a deficient number, since it is larger than the sum of its proper divisors (97267790243290).

121200111201110 is a wasteful number, since it uses less digits than its factorization.

121200111201110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17094515695.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 121200111201110 its reverse (11102111002121), we get a palindrome (132302222203231).

The spelling of 121200111201110 in words is "one hundred twenty-one trillion, two hundred billion, one hundred eleven million, two hundred one thousand, one hundred ten".