20121100152 has 16 divisors (see below), whose sum is σ = 50302750440. Its totient is φ = 6707033376.

The previous prime is 20121100151. The next prime is 20121100163. The reversal of 20121100152 is 25100112102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121100151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 419189563 + ... + 419189610.

Almost surely, 2^20121100152 is an apocalyptic number.

It is an amenable number.

20121100152 is an abundant number, since it is smaller than the sum of its proper divisors (30181650288).

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

20121100152 is a wasteful number, since it uses less digits than its factorization.

20121100152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838379182 (or 838379178 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

Adding to 20121100152 its reverse (25100112102), we get a palindrome (45221212254).

The spelling of 20121100152 in words is "twenty billion, one hundred twenty-one million, one hundred thousand, one hundred fifty-two".