20122451254 has 16 divisors (see below), whose sum is σ = 30987580176. Its totient is φ = 9794332800.

The previous prime is 20122451243. The next prime is 20122451263. The reversal of 20122451254 is 45215422102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231012 + ... + 305959.

It is an arithmetic number, because the mean of its divisors is an integer number (1936723761).

Almost surely, 2^20122451254 is an apocalyptic number.

20122451254 is a deficient number, since it is larger than the sum of its proper divisors (10865128922).

20122451254 is a wasteful number, since it uses less digits than its factorization.

20122451254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537471.

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 20122451254 its reverse (45215422102), we get a palindrome (65337873356).

The spelling of 20122451254 in words is "twenty billion, one hundred twenty-two million, four hundred fifty-one thousand, two hundred fifty-four".