2111929272 has 48 divisors (see below), whose sum is σ = 5743589280. Its totient is φ = 701049600.

The previous prime is 2111929271. The next prime is 2111929277. The reversal of 2111929272 is 2729291112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111929271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43504 + ... + 78207.

It is an arithmetic number, because the mean of its divisors is an integer number (119658110).

Almost surely, 2^2111929272 is an apocalyptic number.

It is an amenable number.

2111929272 is an abundant number, since it is smaller than the sum of its proper divisors (3631660008).

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

2111929272 is a wasteful number, since it uses less digits than its factorization.

2111929272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121964 (or 121957 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 2111929272 is about 45955.7316555835. The cubic root of 2111929272 is about 1282.9994097117. Note that the first 3 decimals are identical.

The spelling of 2111929272 in words is "two billion, one hundred eleven million, nine hundred twenty-nine thousand, two hundred seventy-two".