121143213402 has 32 divisors (see below), whose sum is σ = 251595832320. Its totient is φ = 38856487680.

The previous prime is 121143213397. The next prime is 121143213427. The reversal of 121143213402 is 204312341121.

It is a super-3 number, since 3×121143213402³ (a number of 34 digits) contains 333 as substring.

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, 3355002 + ... + 3390917.

It is an arithmetic number, because the mean of its divisors is an integer number (7862369760).

Almost surely, 2^121143213402 is an apocalyptic number.

121143213402 is an abundant number, since it is smaller than the sum of its proper divisors (130452618918).

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

121143213402 is a wasteful number, since it uses less digits than its factorization.

121143213402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6746038.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 121143213402 its reverse (204312341121), we get a palindrome (325455554523).

The spelling of 121143213402 in words is "one hundred twenty-one billion, one hundred forty-three million, two hundred thirteen thousand, four hundred two".