121111212132201 has 32 divisors (see below), whose sum is σ = 176020728428160. Its totient is φ = 73761066187776.

The previous prime is 121111212132187. The next prime is 121111212132217. The reversal of 121111212132201 is 102231212111121.

It is not a de Polignac number, because 121111212132201 - 2¹⁵ = 121111212099433 is a prime.

It is a super-2 number, since 2×121111212132201² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121111212132901) 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, 75798706 + ... + 77380011.

It is an arithmetic number, because the mean of its divisors is an integer number (5500647763380).

Almost surely, 2^{121111212132201} is an apocalyptic number.

It is an amenable number.

121111212132201 is a deficient number, since it is larger than the sum of its proper divisors (54909516295959).

121111212132201 is a wasteful number, since it uses less digits than its factorization.

121111212132201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153179193.

The product of its (nonzero) digits is 96, while the sum is 21.

Adding to 121111212132201 its reverse (102231212111121), we get a palindrome (223342424243322).

The spelling of 121111212132201 in words is "one hundred twenty-one trillion, one hundred eleven billion, two hundred twelve million, one hundred thirty-two thousand, two hundred one".