1211012342121 has 8 divisors (see below), whose sum is σ = 1684886736960. Its totient is φ = 772239754352.

The previous prime is 1211012342119. The next prime is 1211012342147. The reversal of 1211012342121 is 1212432101121.

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 1211012342121 - 2¹ = 1211012342119 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1211012332121) 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, 8775451686 + ... + 8775451823.

It is an arithmetic number, because the mean of its divisors is an integer number (210610842120).

Almost surely, 2^{1211012342121} is an apocalyptic number.

It is an amenable number.

1211012342121 is a deficient number, since it is larger than the sum of its proper divisors (473874394839).

1211012342121 is a wasteful number, since it uses less digits than its factorization.

1211012342121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17550903535.

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

Adding to 1211012342121 its reverse (1212432101121), we get a palindrome (2423444443242).

The spelling of 1211012342121 in words is "one trillion, two hundred eleven billion, twelve million, three hundred forty-two thousand, one hundred twenty-one".