1031212132420 has 48 divisors (see below), whose sum is σ = 2180565975168. Its totient is φ = 409625510400.

The previous prime is 1031212132403. The next prime is 1031212132427. The reversal of 1031212132420 is 242312121301.

It is a junction number, because it is equal to n+sod(n) for n = 1031212132391 and 1031212132400.

It is not an unprimeable number, because it can be changed into a prime (1031212132427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9953727 + ... + 10056793.

It is an arithmetic number, because the mean of its divisors is an integer number (45428457816).

Almost surely, 2^{1031212132420} is an apocalyptic number.

1031212132420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031212132420 is an abundant number, since it is smaller than the sum of its proper divisors (1149353842748).

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

1031212132420 is a wasteful number, since it uses less digits than its factorization.

1031212132420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106540 (or 106538 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1031212132420 its reverse (242312121301), we get a palindrome (1273524253721).

The spelling of 1031212132420 in words is "one trillion, thirty-one billion, two hundred twelve million, one hundred thirty-two thousand, four hundred twenty".