211402522445 has 24 divisors (see below), whose sum is σ = 257502138912. Its totient is φ = 166613097600.

The previous prime is 211402522421. The next prime is 211402522451. The reversal of 211402522445 is 544225204112.

It is not a de Polignac number, because 211402522445 - 2¹⁸ = 211402260301 is a prime.

It is a super-2 number, since 2×211402522445² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25868210 + ... + 25876380.

It is an arithmetic number, because the mean of its divisors is an integer number (10729255788).

Almost surely, 2^211402522445 is an apocalyptic number.

It is an amenable number.

211402522445 is a deficient number, since it is larger than the sum of its proper divisors (46099616467).

211402522445 is an frugal number, since it uses more digits than its factorization.

211402522445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9293 (or 9220 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 32.

Adding to 211402522445 its reverse (544225204112), we get a palindrome (755627726557).

The spelling of 211402522445 in words is "two hundred eleven billion, four hundred two million, five hundred twenty-two thousand, four hundred forty-five".