121201011010 has 16 divisors (see below), whose sum is σ = 220321839672. Its totient is φ = 48000400000.

The previous prime is 121201010999. The next prime is 121201011017. The reversal of 121201011010 is 10110102121.

It can be written as a sum of positive squares in 4 ways, for example, as 105688059409 + 15512951601 = 325097^2 + 124551^2 .

It is a super-2 number, since 2×121201011010² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (121201011017) 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, 59999491 + ... + 60001510.

Almost surely, 2^121201011010 is an apocalyptic number.

121201011010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121201011010 is a deficient number, since it is larger than the sum of its proper divisors (99120828662).

121201011010 is a wasteful number, since it uses less digits than its factorization.

121201011010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120001109.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 121201011010 its reverse (10110102121), we get a palindrome (131311113131).

The spelling of 121201011010 in words is "one hundred twenty-one billion, two hundred one million, eleven thousand, ten".