16121212471 has 32 divisors (see below), whose sum is σ = 20188208768. Its totient is φ = 12533667840.

The previous prime is 16121212469. The next prime is 16121212483. The reversal of 16121212471 is 17421212161.

It is not a de Polignac number, because 16121212471 - 2¹ = 16121212469 is a prime.

It is a super-3 number, since 3×16121212471³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16121212271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1835731 + ... + 1844491.

It is an arithmetic number, because the mean of its divisors is an integer number (630881524).

Almost surely, 2^16121212471 is an apocalyptic number.

16121212471 is a deficient number, since it is larger than the sum of its proper divisors (4066996297).

16121212471 is a wasteful number, since it uses less digits than its factorization.

16121212471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9131.

The product of its digits is 1344, while the sum is 28.

The spelling of 16121212471 in words is "sixteen billion, one hundred twenty-one million, two hundred twelve thousand, four hundred seventy-one".