1213153420122 has 48 divisors (see below), whose sum is σ = 3008642113152. Its totient is φ = 346079512800.

The previous prime is 1213153420121. The next prime is 1213153420189. The reversal of 1213153420122 is 2210243513121.

It is a happy number.

1213153420122 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 1 + 534 + 2 + 0 + 122 = 666.

It is not an unprimeable number, because it can be changed into a prime (1213153420121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7359129 + ... + 7522172.

It is an arithmetic number, because the mean of its divisors is an integer number (62680044024).

Almost surely, 2^{1213153420122} is an apocalyptic number.

1213153420122 is an abundant number, since it is smaller than the sum of its proper divisors (1795488693030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213153420122 is a wasteful number, since it uses less digits than its factorization.

1213153420122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14881963 (or 14881960 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 1213153420122 its reverse (2210243513121), we get a palindrome (3423396933243).

The spelling of 1213153420122 in words is "one trillion, two hundred thirteen billion, one hundred fifty-three million, four hundred twenty thousand, one hundred twenty-two".