245541511122021 has 12 divisors (see below), whose sum is σ = 359964669705472. Its totient is φ = 161251141631976.

The previous prime is 245541511122013. The next prime is 245541511122029. The reversal of 245541511122021 is 120221115145542.

245541511122021 is a `hidden beast` number, since 2 + 4 + 5 + 5 + 415 + 1 + 11 + 220 + 2 + 1 = 666.

245541511122021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (245541511122013) and next prime (245541511122029).

It is not a de Polignac number, because 245541511122021 - 2³ = 245541511122013 is a prime.

It is a super-2 number, since 2×245541511122021² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245541511122029) 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, 203599925701 + ... + 203599926906.

Almost surely, 2^{245541511122021} is an apocalyptic number.

It is an amenable number.

245541511122021 is a deficient number, since it is larger than the sum of its proper divisors (114423158583451).

245541511122021 is a wasteful number, since it uses less digits than its factorization.

245541511122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407199852680 (or 407199852677 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 36.

Adding to 245541511122021 its reverse (120221115145542), we get a palindrome (365762626267563).

The spelling of 245541511122021 in words is "two hundred forty-five trillion, five hundred forty-one billion, five hundred eleven million, one hundred twenty-two thousand, twenty-one".