20012201525321 has 4 divisors (see below), whose sum is σ = 20012304096000. Its totient is φ = 20012098954644.

The previous prime is 20012201525311. The next prime is 20012201525363. The reversal of 20012201525321 is 12352510221002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20012201525321 - 2²² = 20012197331017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20012201525311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50992121 + ... + 51383078.

It is an arithmetic number, because the mean of its divisors is an integer number (5003076024000).

Almost surely, 2^{20012201525321} is an apocalyptic number.

It is an amenable number.

20012201525321 is a deficient number, since it is larger than the sum of its proper divisors (102570679).

20012201525321 is a wasteful number, since it uses less digits than its factorization.

20012201525321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102570678.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 20012201525321 its reverse (12352510221002), we get a palindrome (32364711746323).

The spelling of 20012201525321 in words is "twenty trillion, twelve billion, two hundred one million, five hundred twenty-five thousand, three hundred twenty-one".