1020311332220 has 48 divisors (see below), whose sum is σ = 2278865933568. Its totient is φ = 382394680320.

The previous prime is 1020311332219. The next prime is 1020311332277. The reversal of 1020311332220 is 222331130201.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1020311332192 and 1020311332201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6652691 + ... + 6804330.

It is an arithmetic number, because the mean of its divisors is an integer number (47476373616).

Almost surely, 2^{1020311332220} is an apocalyptic number.

1020311332220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020311332220 is an abundant number, since it is smaller than the sum of its proper divisors (1258554601348).

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

1020311332220 is a wasteful number, since it uses less digits than its factorization.

1020311332220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13457270 (or 13457268 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1020311332220 its reverse (222331130201), we get a palindrome (1242642462421).

It can be divided in two parts, 1020311 and 332220, that added together give a palindrome (1352531).

The spelling of 1020311332220 in words is "one trillion, twenty billion, three hundred eleven million, three hundred thirty-two thousand, two hundred twenty".