121340021011 has 12 divisors (see below), whose sum is σ = 133386948072. Its totient is φ = 110298188000.

The previous prime is 121340021003. The next prime is 121340021017. The reversal of 121340021011 is 110120043121.

It is not a de Polignac number, because 121340021011 - 2³ = 121340021003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121340021017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1336791 + ... + 1424671.

It is an arithmetic number, because the mean of its divisors is an integer number (11115579006).

Almost surely, 2^121340021011 is an apocalyptic number.

121340021011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121340021011 is a deficient number, since it is larger than the sum of its proper divisors (12046927061).

121340021011 is a wasteful number, since it uses less digits than its factorization.

121340021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99314 (or 99303 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 121340021011 its reverse (110120043121), we get a palindrome (231460064132).

The spelling of 121340021011 in words is "one hundred twenty-one billion, three hundred forty million, twenty-one thousand, eleven".