121002222020210 has 48 divisors (see below), whose sum is σ = 231075257022792. Its totient is φ = 45592090252800.

The previous prime is 121002222020191. The next prime is 121002222020221. The reversal of 121002222020210 is 12020222200121.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 12055820401 + 120990166199809 = 109799^2 + 10999553^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 175117361 + ... + 175806980.

Almost surely, 2^{121002222020210} is an apocalyptic number.

121002222020210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121002222020210 is a deficient number, since it is larger than the sum of its proper divisors (110073035002582).

121002222020210 is a wasteful number, since it uses less digits than its factorization.

121002222020210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350924447 (or 350924418 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 121002222020210 its reverse (12020222200121), we get a palindrome (133022444220331).

The spelling of 121002222020210 in words is "one hundred twenty-one trillion, two billion, two hundred twenty-two million, twenty thousand, two hundred ten".