201231030212 has 6 divisors (see below), whose sum is σ = 352154302878. Its totient is φ = 100615515104.

The previous prime is 201231030181. The next prime is 201231030229. The reversal of 201231030212 is 212030132102.

It can be written as a sum of positive squares in only one way, i.e., 193895792896 + 7335237316 = 440336^2 + 85646^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25153878773 + ... + 25153878780.

It is an arithmetic number, because the mean of its divisors is an integer number (58692383813).

Almost surely, 2^201231030212 is an apocalyptic number.

It is an amenable number.

201231030212 is a deficient number, since it is larger than the sum of its proper divisors (150923272666).

201231030212 is a wasteful number, since it uses less digits than its factorization.

201231030212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50307757557 (or 50307757555 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 201231030212 its reverse (212030132102), we get a palindrome (413261162314).

The spelling of 201231030212 in words is "two hundred one billion, two hundred thirty-one million, thirty thousand, two hundred twelve".