20120300221021 has 96 divisors (see below), whose sum is σ = 28409343508224. Its totient is φ = 13852749081600.

The previous prime is 20120300220973. The next prime is 20120300221027. The reversal of 20120300221021 is 12012200302102.

It is a happy number.

It is not a de Polignac number, because 20120300221021 - 2¹³ = 20120300212829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20120300220986 and 20120300221004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120300221027) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 23506450 + ... + 24347356.

It is an arithmetic number, because the mean of its divisors is an integer number (295930661544).

Almost surely, 2^{20120300221021} is an apocalyptic number.

It is an amenable number.

20120300221021 is a deficient number, since it is larger than the sum of its proper divisors (8289043287203).

20120300221021 is a wasteful number, since it uses less digits than its factorization.

20120300221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841043 (or 841032 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20120300221021 its reverse (12012200302102), we get a palindrome (32132500523123).

The spelling of 20120300221021 in words is "twenty trillion, one hundred twenty billion, three hundred million, two hundred twenty-one thousand, twenty-one".