1214121403155 has 16 divisors (see below), whose sum is σ = 1943378557344. Its totient is φ = 647269977600.

The previous prime is 1214121403147. The next prime is 1214121403193. The reversal of 1214121403155 is 5513041214121.

It is not a de Polignac number, because 1214121403155 - 2³ = 1214121403147 is a prime.

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, 16301446 + ... + 16375755.

It is an arithmetic number, because the mean of its divisors is an integer number (121461159834).

Almost surely, 2^{1214121403155} is an apocalyptic number.

1214121403155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1214121403155 is a deficient number, since it is larger than the sum of its proper divisors (729257154189).

1214121403155 is a wasteful number, since it uses less digits than its factorization.

1214121403155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32679686.

The product of its (nonzero) digits is 4800, while the sum is 30.

Adding to 1214121403155 its reverse (5513041214121), we get a palindrome (6727162617276).

The spelling of 1214121403155 in words is "one trillion, two hundred fourteen billion, one hundred twenty-one million, four hundred three thousand, one hundred fifty-five".