1201132020 has 96 divisors (see below), whose sum is σ = 3681127296. Its totient is φ = 290214400.

The previous prime is 1201132007. The next prime is 1201132033. The reversal of 1201132020 is 202311021.

It is an interprime number because it is at equal distance from previous prime (1201132007) and next prime (1201132033).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1201131987 and 1201132005.

It is a congruent number.

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, 206350 + ... + 212090.

It is an arithmetic number, because the mean of its divisors is an integer number (38345076).

Almost surely, 2^1201132020 is an apocalyptic number.

1201132020 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 1201132020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1840563648).

1201132020 is an abundant number, since it is smaller than the sum of its proper divisors (2479995276).

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

1201132020 is a wasteful number, since it uses less digits than its factorization.

1201132020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6081 (or 6079 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1201132020 is about 34657.3516010673. The cubic root of 1201132020 is about 1062.9926171503.

Adding to 1201132020 its reverse (202311021), we get a palindrome (1403443041).

The spelling of 1201132020 in words is "one billion, two hundred one million, one hundred thirty-two thousand, twenty".