211201423057 has 8 divisors (see below), whose sum is σ = 223675470792. Its totient is φ = 198732979200.

The previous prime is 211201423031. The next prime is 211201423079. The reversal of 211201423057 is 750324102112.

It can be written as a sum of positive squares in 4 ways, for example, as 48263256721 + 162938166336 = 219689^2 + 403656^2 .

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 211201423057 - 2²³ = 211193034449 is a prime.

It is a super-2 number, since 2×211201423057² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211201423007) 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, 1323244 + ... + 1474237.

It is an arithmetic number, because the mean of its divisors is an integer number (27959433849).

Almost surely, 2^211201423057 is an apocalyptic number.

It is an amenable number.

211201423057 is a deficient number, since it is larger than the sum of its proper divisors (12474047735).

211201423057 is a wasteful number, since it uses less digits than its factorization.

211201423057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2801939.

The product of its (nonzero) digits is 3360, while the sum is 28.

Adding to 211201423057 its reverse (750324102112), we get a palindrome (961525525169).

The spelling of 211201423057 in words is "two hundred eleven billion, two hundred one million, four hundred twenty-three thousand, fifty-seven".