20311221112041 has 16 divisors (see below), whose sum is σ = 28677099510144. Its totient is φ = 12743213639424.

The previous prime is 20311221112027. The next prime is 20311221112067. The reversal of 20311221112041 is 14021112211302.

It is not a de Polignac number, because 20311221112041 - 2⁶ = 20311221111977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20311221111999 and 20311221112017.

It is not an unprimeable number, because it can be changed into a prime (20311221112141) 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, 16298806 + ... + 17500671.

It is an arithmetic number, because the mean of its divisors is an integer number (1792318719384).

Almost surely, 2^{20311221112041} is an apocalyptic number.

It is an amenable number.

20311221112041 is a deficient number, since it is larger than the sum of its proper divisors (8365878398103).

20311221112041 is a wasteful number, since it uses less digits than its factorization.

20311221112041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33811280.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 20311221112041 its reverse (14021112211302), we get a palindrome (34332333323343).

The spelling of 20311221112041 in words is "twenty trillion, three hundred eleven billion, two hundred twenty-one million, one hundred twelve thousand, forty-one".