211152225401 has 8 divisors (see below), whose sum is σ = 227421177480. Its totient is φ = 194887055232.

The previous prime is 211152225377. The next prime is 211152225407. The reversal of 211152225401 is 104522251112.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8944619776 + 202207605625 = 94576^2 + 449675^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211152225401 is a prime.

It is a super-2 number, since 2×211152225401² (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 (211152225407) 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, 828980 + ... + 1053333.

It is an arithmetic number, because the mean of its divisors is an integer number (28427647185).

Almost surely, 2^211152225401 is an apocalyptic number.

It is an amenable number.

211152225401 is a deficient number, since it is larger than the sum of its proper divisors (16268952079).

211152225401 is a wasteful number, since it uses less digits than its factorization.

211152225401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890955.

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 211152225401 its reverse (104522251112), we get a palindrome (315674476513).

The spelling of 211152225401 in words is "two hundred eleven billion, one hundred fifty-two million, two hundred twenty-five thousand, four hundred one".