121120021244 has 24 divisors (see below), whose sum is σ = 228232151280. Its totient is φ = 56031593216.

The previous prime is 121120021241. The next prime is 121120021249. The reversal of 121120021244 is 442120021121.

It is a super-2 number, since 2×121120021244² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121120021241) 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, 15090707 + ... + 15098730.

It is an arithmetic number, because the mean of its divisors is an integer number (9509672970).

Almost surely, 2^121120021244 is an apocalyptic number.

It is an amenable number.

121120021244 is a deficient number, since it is larger than the sum of its proper divisors (107112130036).

121120021244 is a wasteful number, since it uses less digits than its factorization.

121120021244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30189517 (or 30189515 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 121120021244 its reverse (442120021121), we get a palindrome (563240042365).

The spelling of 121120021244 in words is "one hundred twenty-one billion, one hundred twenty million, twenty-one thousand, two hundred forty-four".