201121423032340 has 12 divisors (see below), whose sum is σ = 422354988367956. Its totient is φ = 80448569212928.

The previous prime is 201121423032329. The next prime is 201121423032349. The reversal of 201121423032340 is 43230324121102.

It can be written as a sum of positive squares in 2 ways, for example, as 27642652186384 + 173478770845956 = 5257628^2 + 13171134^2 .

It is a junction number, because it is equal to n+sod(n) for n = 201121423032299 and 201121423032308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201121423032349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5028035575789 + ... + 5028035575828.

It is an arithmetic number, because the mean of its divisors is an integer number (35196249030663).

Almost surely, 2^{201121423032340} is an apocalyptic number.

201121423032340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201121423032340 is an abundant number, since it is smaller than the sum of its proper divisors (221233565335616).

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

201121423032340 is a wasteful number, since it uses less digits than its factorization.

201121423032340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10056071151626 (or 10056071151624 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 201121423032340 its reverse (43230324121102), we get a palindrome (244351747153442).

The spelling of 201121423032340 in words is "two hundred one trillion, one hundred twenty-one billion, four hundred twenty-three million, thirty-two thousand, three hundred forty".