1021032001220 has 288 divisors, whose sum is σ = 2918266081920. Its totient is φ = 295802357760.

The previous prime is 1021032001219. The next prime is 1021032001237. The reversal of 1021032001220 is 221002301201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1021032001195 and 1021032001204.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10808432 + ... + 10902488.

It is an arithmetic number, because the mean of its divisors is an integer number (10132868340).

Almost surely, 2^{1021032001220} is an apocalyptic number.

1021032001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021032001220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1459133040960).

1021032001220 is an abundant number, since it is smaller than the sum of its proper divisors (1897234080700).

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

1021032001220 is a wasteful number, since it uses less digits than its factorization.

1021032001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94163 (or 94154 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 1021032001220 its reverse (221002301201), we get a palindrome (1242034302421).

The spelling of 1021032001220 in words is "one trillion, twenty-one billion, thirty-two million, one thousand, two hundred twenty".