121121211010 has 8 divisors (see below), whose sum is σ = 218018179836. Its totient is φ = 48448484400.

The previous prime is 121121210971. The next prime is 121121211037. The reversal of 121121211010 is 10112121121.

It is a happy number.

121121211010 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 107706706969 + 13414504041 = 328187^2 + 115821^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6056060541 + ... + 6056060560.

Almost surely, 2^121121211010 is an apocalyptic number.

121121211010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121121211010 is a deficient number, since it is larger than the sum of its proper divisors (96896968826).

121121211010 is a wasteful number, since it uses less digits than its factorization.

121121211010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12112121108.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121121211010 its reverse (10112121121), we get a palindrome (131233332131).

The spelling of 121121211010 in words is "one hundred twenty-one billion, one hundred twenty-one million, two hundred eleven thousand, ten".