11401203220 has 36 divisors (see below), whose sum is σ = 26316997812. Its totient is φ = 4145891200.

The previous prime is 11401203211. The next prime is 11401203239. The reversal of 11401203220 is 2230210411.

It can be written as a sum of positive squares in 2 ways, for example, as 1279635984 + 10121567236 = 35772^2 + 100606^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11401203194 and 11401203203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2353201 + ... + 2358040.

It is an arithmetic number, because the mean of its divisors is an integer number (731027717).

Almost surely, 2^11401203220 is an apocalyptic number.

11401203220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11401203220 is an abundant number, since it is smaller than the sum of its proper divisors (14915794592).

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

11401203220 is a wasteful number, since it uses less digits than its factorization.

11401203220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4711272 (or 4711259 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 11401203220 its reverse (2230210411), we get a palindrome (13631413631).

The spelling of 11401203220 in words is "eleven billion, four hundred one million, two hundred three thousand, two hundred twenty".