1245351211320 has 192 divisors, whose sum is σ = 4031545190400. Its totient is φ = 307407386880.

The previous prime is 1245351211303. The next prime is 1245351211393. The reversal of 1245351211320 is 231121535421.

It is a happy number.

It is a super-2 number, since 2×1245351211320² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1651461 + ... + 2284299.

It is an arithmetic number, because the mean of its divisors is an integer number (20997631200).

Almost surely, 2^{1245351211320} is an apocalyptic number.

1245351211320 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 1245351211320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2015772595200).

1245351211320 is an abundant number, since it is smaller than the sum of its proper divisors (2786193979080).

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

1245351211320 is a wasteful number, since it uses less digits than its factorization.

1245351211320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632930 (or 632903 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 1245351211320 its reverse (231121535421), we get a palindrome (1476472746741).

The spelling of 1245351211320 in words is "one trillion, two hundred forty-five billion, three hundred fifty-one million, two hundred eleven thousand, three hundred twenty".