20121452541 has 16 divisors (see below), whose sum is σ = 29960884800. Its totient is φ = 13346205264.

The previous prime is 20121452513. The next prime is 20121452543. The reversal of 20121452541 is 14525412102.

It is a happy number.

20121452541 is a `hidden beast` number, since 201 + 2 + 1 + 452 + 5 + 4 + 1 = 666.

It is not a de Polignac number, because 20121452541 - 2⁵ = 20121452509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121452543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1886151 + ... + 1896788.

It is an arithmetic number, because the mean of its divisors is an integer number (1872555300).

Almost surely, 2^20121452541 is an apocalyptic number.

It is an amenable number.

20121452541 is a deficient number, since it is larger than the sum of its proper divisors (9839432259).

20121452541 is a wasteful number, since it uses less digits than its factorization.

20121452541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3783145 (or 3783139 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 20121452541 its reverse (14525412102), we get a palindrome (34646864643).

The spelling of 20121452541 in words is "twenty billion, one hundred twenty-one million, four hundred fifty-two thousand, five hundred forty-one".