1221140312134 has 16 divisors (see below), whose sum is σ = 1870890757200. Its totient is φ = 597600441504.

The previous prime is 1221140312131. The next prime is 1221140312153. The reversal of 1221140312134 is 4312130411221.

It is a junction number, because it is equal to n+sod(n) for n = 1221140312099 and 1221140312108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221140312131) 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, 22568277 + ... + 22622320.

It is an arithmetic number, because the mean of its divisors is an integer number (116930672325).

Almost surely, 2^{1221140312134} is an apocalyptic number.

1221140312134 is a deficient number, since it is larger than the sum of its proper divisors (649750445066).

1221140312134 is a wasteful number, since it uses less digits than its factorization.

1221140312134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45190887.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 1221140312134 its reverse (4312130411221), we get a palindrome (5533270723355).

The spelling of 1221140312134 in words is "one trillion, two hundred twenty-one billion, one hundred forty million, three hundred twelve thousand, one hundred thirty-four".