10021212020122 has 4 divisors (see below), whose sum is σ = 15031818030186. Its totient is φ = 5010606010060.

The previous prime is 10021212020117. The next prime is 10021212020123. The reversal of 10021212020122 is 22102021212001.

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., 8225716538601 + 1795495481521 = 2868051^2 + 1339961^2 .

It is a super-2 number, since 2×10021212020122² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10021212020096 and 10021212020105.

It is not an unprimeable number, because it can be changed into a prime (10021212020123) 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, 2505303005029 + ... + 2505303005032.

Almost surely, 2^{10021212020122} is an apocalyptic number.

10021212020122 is a deficient number, since it is larger than the sum of its proper divisors (5010606010064).

10021212020122 is an equidigital number, since it uses as much as digits as its factorization.

10021212020122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5010606010063.

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

Adding to 10021212020122 its reverse (22102021212001), we get a palindrome (32123233232123).

The spelling of 10021212020122 in words is "ten trillion, twenty-one billion, two hundred twelve million, twenty thousand, one hundred twenty-two".