121002120220210 has 32 divisors (see below), whose sum is σ = 219200952178800. Its totient is φ = 48090401179392.

The previous prime is 121002120220171. The next prime is 121002120220283. The reversal of 121002120220210 is 12022021200121.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 41542884672129 + 79459235548081 = 6445377^2 + 8913991^2 .

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, 33442716 + ... + 36883864.

Almost surely, 2^{121002120220210} is an apocalyptic number.

121002120220210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121002120220210 is a deficient number, since it is larger than the sum of its proper divisors (98198831958590).

121002120220210 is a wasteful number, since it uses less digits than its factorization.

121002120220210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3463710.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121002120220210 its reverse (12022021200121), we get a palindrome (133024141420331).

The spelling of 121002120220210 in words is "one hundred twenty-one trillion, two billion, one hundred twenty million, two hundred twenty thousand, two hundred ten".