121020121200010 has 32 divisors (see below), whose sum is σ = 218667445616592. Its totient is φ = 48223646760960.

The previous prime is 121020121199959. The next prime is 121020121200029. The reversal of 121020121200010 is 10002121020121.

It can be written as a sum of positive squares in 8 ways, for example, as 17226060884041 + 103794060315969 = 4150429^2 + 10187937^2 .

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, 16648951 + ... + 22786570.

Almost surely, 2^{121020121200010} is an apocalyptic number.

121020121200010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121020121200010 is a deficient number, since it is larger than the sum of its proper divisors (97647324416582).

121020121200010 is a wasteful number, since it uses less digits than its factorization.

121020121200010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39436698.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121020121200010 its reverse (10002121020121), we get a palindrome (131022242220131).

The spelling of 121020121200010 in words is "one hundred twenty-one trillion, twenty billion, one hundred twenty-one million, two hundred thousand, ten".