1220121310 has 8 divisors (see below), whose sum is σ = 2196218376. Its totient is φ = 488048520.

The previous prime is 1220121283. The next prime is 1220121313. The reversal of 1220121310 is 131210221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1220121310² = 2977392022232232200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220121313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61006056 + ... + 61006075.

It is an arithmetic number, because the mean of its divisors is an integer number (274527297).

Almost surely, 2^1220121310 is an apocalyptic number.

1220121310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220121310 is a deficient number, since it is larger than the sum of its proper divisors (976097066).

1220121310 is a wasteful number, since it uses less digits than its factorization.

1220121310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122012138.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1220121310 is about 34930.2348975783. The cubic root of 1220121310 is about 1068.5651451886.

Adding to 1220121310 its reverse (131210221), we get a palindrome (1351331531).

The spelling of 1220121310 in words is "one billion, two hundred twenty million, one hundred twenty-one thousand, three hundred ten".