10212220121002 has 4 divisors (see below), whose sum is σ = 15318330181506. Its totient is φ = 5106110060500.

The previous prime is 10212220120997. The next prime is 10212220121003. The reversal of 10212220121002 is 20012102221201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8300385719521 + 1911834401481 = 2881039^2 + 1382691^2 .

It is not an unprimeable number, because it can be changed into a prime (10212220121003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2553055030249 + ... + 2553055030252.

Almost surely, 2^{10212220121002} is an apocalyptic number.

10212220121002 is a deficient number, since it is larger than the sum of its proper divisors (5106110060504).

10212220121002 is an equidigital number, since it uses as much as digits as its factorization.

10212220121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5106110060503.

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

Adding to 10212220121002 its reverse (20012102221201), we get a palindrome (30224322342203).

The spelling of 10212220121002 in words is "ten trillion, two hundred twelve billion, two hundred twenty million, one hundred twenty-one thousand, two".