32112011221220 has 36 divisors (see below), whose sum is σ = 78445055985660. Its totient is φ = 11009832418368.

The previous prime is 32112011221211. The next prime is 32112011221223. The reversal of 32112011221220 is 2212211021123.

It can be written as a sum of positive squares in 2 ways, for example, as 5999481979456 + 26112529241764 = 2449384^2 + 5110042^2 .

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 = 32112011221192 and 32112011221201.

It is not an unprimeable number, because it can be changed into a prime (32112011221223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16383678215 + ... + 16383680174.

It is an arithmetic number, because the mean of its divisors is an integer number (2179029332935).

Almost surely, 2^{32112011221220} is an apocalyptic number.

It is an amenable number.

32112011221220 is an abundant number, since it is smaller than the sum of its proper divisors (46333044764440).

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

32112011221220 is a wasteful number, since it uses less digits than its factorization.

32112011221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32767358412 (or 32767358403 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 32112011221220 its reverse (2212211021123), we get a palindrome (34324222242343).

The spelling of 32112011221220 in words is "thirty-two trillion, one hundred twelve billion, eleven million, two hundred twenty-one thousand, two hundred twenty".