20220021321000 has 128 divisors (see below), whose sum is σ = 64028056210560. Its totient is φ = 5311527936000.

The previous prime is 20220021320923. The next prime is 20220021321077. The reversal of 20220021321000 is 12312002202.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20220021320923) and next prime (20220021321077).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50097561 + ... + 50499560.

It is an arithmetic number, because the mean of its divisors is an integer number (500219189145).

Almost surely, 2^{20220021321000} is an apocalyptic number.

20220021321000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20220021321000 is an abundant number, since it is smaller than the sum of its proper divisors (43808034889560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20220021321000 is a wasteful number, since it uses less digits than its factorization.

20220021321000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100597212 (or 100597198 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20220021321000 its reverse (12312002202), we get a palindrome (20232333323202).

The spelling of 20220021321000 in words is "twenty trillion, two hundred twenty billion, twenty-one million, three hundred twenty-one thousand".