1023221214020 has 12 divisors (see below), whose sum is σ = 2148764549484. Its totient is φ = 409288485600.

The previous prime is 1023221214013. The next prime is 1023221214023. The reversal of 1023221214020 is 204121223201.

It can be written as a sum of positive squares in 2 ways, for example, as 601905982276 + 421315231744 = 775826^2 + 649088^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 51161060701 = 1023221214020 / (1 + 0 + 2 + 3 + 2 + 2 + 1 + 2 + 1 + 4 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1023221213983 and 1023221214001.

It is not an unprimeable number, because it can be changed into a prime (1023221214023) 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, 25580530331 + ... + 25580530370.

It is an arithmetic number, because the mean of its divisors is an integer number (179063712457).

Almost surely, 2^{1023221214020} is an apocalyptic number.

1023221214020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023221214020 is an abundant number, since it is smaller than the sum of its proper divisors (1125543335464).

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

1023221214020 is a wasteful number, since it uses less digits than its factorization.

1023221214020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51161060710 (or 51161060708 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1023221214020 its reverse (204121223201), we get a palindrome (1227342437221).

The spelling of 1023221214020 in words is "one trillion, twenty-three billion, two hundred twenty-one million, two hundred fourteen thousand, twenty".