121111412020203 has 32 divisors (see below), whose sum is σ = 180059168194560. Its totient is φ = 71794424950560.

The previous prime is 121111412020199. The next prime is 121111412020213. The reversal of 121111412020203 is 302020214111121.

It is not a de Polignac number, because 121111412020203 - 2² = 121111412020199 is a prime.

It is a super-2 number, since 2×121111412020203² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121111412020203.

It is not an unprimeable number, because it can be changed into a prime (121111412020213) 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, 216806275 + ... + 217364172.

It is an arithmetic number, because the mean of its divisors is an integer number (5626849006080).

Almost surely, 2^{121111412020203} is an apocalyptic number.

121111412020203 is a deficient number, since it is larger than the sum of its proper divisors (58947756174357).

121111412020203 is a wasteful number, since it uses less digits than its factorization.

121111412020203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434170647.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 121111412020203 its reverse (302020214111121), we get a palindrome (423131626131324).

The spelling of 121111412020203 in words is "one hundred twenty-one trillion, one hundred eleven billion, four hundred twelve million, twenty thousand, two hundred three".