121041620890 has 16 divisors (see below), whose sum is σ = 220032096840. Its totient is φ = 47937275200.

The previous prime is 121041620867. The next prime is 121041620969. The reversal of 121041620890 is 98026140121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 113399889001 + 7641731889 = 336749^2 + 87417^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 59920585 + ... + 59922604.

Almost surely, 2^121041620890 is an apocalyptic number.

121041620890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121041620890 is a deficient number, since it is larger than the sum of its proper divisors (98990475950).

121041620890 is a wasteful number, since it uses less digits than its factorization.

121041620890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119843297.

The product of its (nonzero) digits is 6912, while the sum is 34.

The spelling of 121041620890 in words is "one hundred twenty-one billion, forty-one million, six hundred twenty thousand, eight hundred ninety".