201213212310 has 144 divisors (see below), whose sum is σ = 581968204272. Its totient is φ = 48191045760.

The previous prime is 201213212293. The next prime is 201213212327. The reversal of 201213212310 is 13212312102.

201213212310 is a `hidden beast` number, since 20 + 12 + 1 + 321 + 2 + 310 = 666.

It is an interprime number because it is at equal distance from previous prime (201213212293) and next prime (201213212327).

It is a super-2 number, since 2×201213212310² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 792564 + ... + 1015176.

It is an arithmetic number, because the mean of its divisors is an integer number (4041445863).

Almost surely, 2^201213212310 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201213212310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290984102136).

201213212310 is an abundant number, since it is smaller than the sum of its proper divisors (380754991962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201213212310 is a wasteful number, since it uses less digits than its factorization.

201213212310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222731 (or 222717 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 201213212310 its reverse (13212312102), we get a palindrome (214425524412).

The spelling of 201213212310 in words is "two hundred one billion, two hundred thirteen million, two hundred twelve thousand, three hundred ten".