1321122030 has 64 divisors (see below), whose sum is σ = 3210762240. Its totient is φ = 347877504.

The previous prime is 1321122029. The next prime is 1321122073. The reversal of 1321122030 is 302211231.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 842307 + ... + 843873.

It is an arithmetic number, because the mean of its divisors is an integer number (50168160).

Almost surely, 2^1321122030 is an apocalyptic number.

1321122030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321122030 is an abundant number, since it is smaller than the sum of its proper divisors (1889640210).

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

1321122030 is a wasteful number, since it uses less digits than its factorization.

1321122030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1913.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1321122030 is about 36347.2423988396. The cubic root of 1321122030 is about 1097.2720364767.

Adding to 1321122030 its reverse (302211231), we get a palindrome (1623333261).

The spelling of 1321122030 in words is "one billion, three hundred twenty-one million, one hundred twenty-two thousand, thirty".