211442254145121 has 8 divisors (see below), whose sum is σ = 288799176393504. Its totient is φ = 137523417330080.

The previous prime is 211442254145117. The next prime is 211442254145147. The reversal of 211442254145121 is 121541452244112.

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 211442254145121 - 2² = 211442254145117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211442254145121.

It is not an unprimeable number, because it can be changed into a prime (211442254145821) 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, 859521358191 + ... + 859521358436.

It is an arithmetic number, because the mean of its divisors is an integer number (36099897049188).

Almost surely, 2^{211442254145121} is an apocalyptic number.

It is an amenable number.

211442254145121 is a deficient number, since it is larger than the sum of its proper divisors (77356922248383).

211442254145121 is a wasteful number, since it uses less digits than its factorization.

211442254145121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1719042716671.

The product of its digits is 102400, while the sum is 39.

The spelling of 211442254145121 in words is "two hundred eleven trillion, four hundred forty-two billion, two hundred fifty-four million, one hundred forty-five thousand, one hundred twenty-one".