121244026146 has 128 divisors (see below), whose sum is σ = 279367833600. Its totient is φ = 34841871360.

The previous prime is 121244026139. The next prime is 121244026147. The reversal of 121244026146 is 641620442121.

It is a super-2 number, since 2×121244026146² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121244026147) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6966171 + ... + 6983553.

It is an arithmetic number, because the mean of its divisors is an integer number (2182561200).

Almost surely, 2^121244026146 is an apocalyptic number.

121244026146 is an abundant number, since it is smaller than the sum of its proper divisors (158123807454).

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

121244026146 is a wasteful number, since it uses less digits than its factorization.

121244026146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17544.

The product of its (nonzero) digits is 18432, while the sum is 33.

Adding to 121244026146 its reverse (641620442121), we get a palindrome (762864468267).

The spelling of 121244026146 in words is "one hundred twenty-one billion, two hundred forty-four million, twenty-six thousand, one hundred forty-six".