1201211112121 has 8 divisors (see below), whose sum is σ = 1217189660544. Its totient is φ = 1185315569760.

The previous prime is 1201211112113. The next prime is 1201211112169. The reversal of 1201211112121 is 1212111121021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1201211112121 - 2³ = 1201211112113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201211112095 and 1201211112104.

It is not an unprimeable number, because it can be changed into a prime (1201211112821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20722381 + ... + 20780266.

It is an arithmetic number, because the mean of its divisors is an integer number (152148707568).

Almost surely, 2^{1201211112121} is an apocalyptic number.

It is an amenable number.

1201211112121 is a deficient number, since it is larger than the sum of its proper divisors (15978548423).

1201211112121 is a wasteful number, since it uses less digits than its factorization.

1201211112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41503031.

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

Adding to 1201211112121 its reverse (1212111121021), we get a palindrome (2413322233142).

The spelling of 1201211112121 in words is "one trillion, two hundred one billion, two hundred eleven million, one hundred twelve thousand, one hundred twenty-one".