1221203400214 has 32 divisors (see below), whose sum is σ = 2097721566720. Its totient is φ = 522315840192.

The previous prime is 1221203400203. The next prime is 1221203400251. The reversal of 1221203400214 is 4120043021221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36863322 + ... + 36896434.

It is an arithmetic number, because the mean of its divisors is an integer number (65553798960).

Almost surely, 2^{1221203400214} is an apocalyptic number.

1221203400214 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1221203400214 is a deficient number, since it is larger than the sum of its proper divisors (876518166506).

1221203400214 is a wasteful number, since it uses less digits than its factorization.

1221203400214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38364.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 1221203400214 its reverse (4120043021221), we get a palindrome (5341246421435).

The spelling of 1221203400214 in words is "one trillion, two hundred twenty-one billion, two hundred three million, four hundred thousand, two hundred fourteen".