1211402123104 has 24 divisors (see below), whose sum is σ = 2393435306808. Its totient is φ = 603545537280.

The previous prime is 1211402123093. The next prime is 1211402123171. The reversal of 1211402123104 is 4013212041121.

It is a super-3 number, since 3×1211402123104³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67351002 + ... + 67368985.

It is an arithmetic number, because the mean of its divisors is an integer number (99726471117).

Almost surely, 2^{1211402123104} is an apocalyptic number.

It is an amenable number.

1211402123104 is a deficient number, since it is larger than the sum of its proper divisors (1182033183704).

1211402123104 is a wasteful number, since it uses less digits than its factorization.

1211402123104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134720278 (or 134720270 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 1211402123104 its reverse (4013212041121), we get a palindrome (5224614164225).

The spelling of 1211402123104 in words is "one trillion, two hundred eleven billion, four hundred two million, one hundred twenty-three thousand, one hundred four".