121012020206 has 32 divisors (see below), whose sum is σ = 226479117312. Its totient is φ = 47111931360.

The previous prime is 121012020203. The next prime is 121012020251. The reversal of 121012020206 is 602020210121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121012020203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91721 + ... + 500436.

It is an arithmetic number, because the mean of its divisors is an integer number (7077472416).

Almost surely, 2^121012020206 is an apocalyptic number.

121012020206 is a deficient number, since it is larger than the sum of its proper divisors (105467097106).

121012020206 is a wasteful number, since it uses less digits than its factorization.

121012020206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593504.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 121012020206 its reverse (602020210121), we get a palindrome (723032230327).

The spelling of 121012020206 in words is "one hundred twenty-one billion, twelve million, twenty thousand, two hundred six".