1212421310 has 16 divisors (see below), whose sum is σ = 2277243936. Its totient is φ = 463882848.

The previous prime is 1212421307. The next prime is 1212421313. The reversal of 1212421310 is 131242121.

It is an interprime number because it is at equal distance from previous prime (1212421307) and next prime (1212421313).

It is a super-2 number, since 2×1212421310² = 2939930865884232200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212421313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2635469 + ... + 2635928.

It is an arithmetic number, because the mean of its divisors is an integer number (142327746).

Almost surely, 2^1212421310 is an apocalyptic number.

1212421310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212421310 is a deficient number, since it is larger than the sum of its proper divisors (1064822626).

1212421310 is a wasteful number, since it uses less digits than its factorization.

1212421310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5271427.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1212421310 is about 34819.8407520770. The cubic root of 1212421310 is about 1066.3125492265.

Adding to 1212421310 its reverse (131242121), we get a palindrome (1343663431).

The spelling of 1212421310 in words is "one billion, two hundred twelve million, four hundred twenty-one thousand, three hundred ten".