121111120021210 has 32 divisors (see below), whose sum is σ = 240172834973184. Its totient is φ = 43604363640000.

The previous prime is 121111120021117. The next prime is 121111120021253. The reversal of 121111120021210 is 12120021111121.

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, 5450534346 + ... + 5450556565.

It is an arithmetic number, because the mean of its divisors is an integer number (7505401092912).

Almost surely, 2^{121111120021210} is an apocalyptic number.

121111120021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121111120021210 is a deficient number, since it is larger than the sum of its proper divisors (119061714951974).

121111120021210 is a wasteful number, since it uses less digits than its factorization.

121111120021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10901091030.

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

Adding to 121111120021210 its reverse (12120021111121), we get a palindrome (133231141132331).

The spelling of 121111120021210 in words is "one hundred twenty-one trillion, one hundred eleven billion, one hundred twenty million, twenty-one thousand, two hundred ten".