20111201652 has 48 divisors (see below), whose sum is σ = 48084388352. Its totient is φ = 6538704480.

The previous prime is 20111201651. The next prime is 20111201657. The reversal of 20111201652 is 25610211102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111201651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 348327 + ... + 401937.

Almost surely, 2^20111201652 is an apocalyptic number.

It is an amenable number.

20111201652 is an abundant number, since it is smaller than the sum of its proper divisors (27973186700).

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

20111201652 is a wasteful number, since it uses less digits than its factorization.

20111201652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54388 (or 54386 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 20111201652 its reverse (25610211102), we get a palindrome (45721412754).

The spelling of 20111201652 in words is "twenty billion, one hundred eleven million, two hundred one thousand, six hundred fifty-two".