20101212020122 has 4 divisors (see below), whose sum is σ = 30151818030186. Its totient is φ = 10050606010060.

The previous prime is 20101212020053. The next prime is 20101212020129. The reversal of 20101212020122 is 22102021210102.

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., 19990297044601 + 110914975521 = 4471051^2 + 333039^2 .

It is a super-2 number, since 2×20101212020122² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20101212020096 and 20101212020105.

It is not an unprimeable number, because it can be changed into a prime (20101212020129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5025303005029 + ... + 5025303005032.

Almost surely, 2^{20101212020122} is an apocalyptic number.

20101212020122 is a deficient number, since it is larger than the sum of its proper divisors (10050606010064).

20101212020122 is a wasteful number, since it uses less digits than its factorization.

20101212020122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10050606010063.

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

Adding to 20101212020122 its reverse (22102021210102), we get a palindrome (42203233230224).

The spelling of 20101212020122 in words is "twenty trillion, one hundred one billion, two hundred twelve million, twenty thousand, one hundred twenty-two".