121020312211210 has 16 divisors (see below), whose sum is σ = 220284163801800. Its totient is φ = 47864213368576.

The previous prime is 121020312211153. The next prime is 121020312211223. The reversal of 121020312211210 is 12112213020121.

It can be written as a sum of positive squares in 4 ways, for example, as 96742194449121 + 24278117762089 = 9835761^2 + 4927283^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67988938555 + ... + 67988940334.

Almost surely, 2^{121020312211210} is an apocalyptic number.

121020312211210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121020312211210 is a deficient number, since it is larger than the sum of its proper divisors (99263851590590).

121020312211210 is a wasteful number, since it uses less digits than its factorization.

121020312211210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135977878985.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 121020312211210 its reverse (12112213020121), we get a palindrome (133132525231331).

The spelling of 121020312211210 in words is "one hundred twenty-one trillion, twenty billion, three hundred twelve million, two hundred eleven thousand, two hundred ten".