21119877246 has 16 divisors (see below), whose sum is σ = 45488966544. Its totient is φ = 6498423744.

The previous prime is 21119877209. The next prime is 21119877293. The reversal of 21119877246 is 64277891112.

It is a super-2 number, since 2×21119877246² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21119877195 and 21119877204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135383751 + ... + 135383906.

It is an arithmetic number, because the mean of its divisors is an integer number (2843060409).

Almost surely, 2^21119877246 is an apocalyptic number.

21119877246 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

21119877246 is an abundant number, since it is smaller than the sum of its proper divisors (24369089298).

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

21119877246 is a wasteful number, since it uses less digits than its factorization.

21119877246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270767675.

The product of its digits is 338688, while the sum is 48.

The spelling of 21119877246 in words is "twenty-one billion, one hundred nineteen million, eight hundred seventy-seven thousand, two hundred forty-six".