20101202021002 has 4 divisors (see below), whose sum is σ = 30151803031506. Its totient is φ = 10050601010500.

The previous prime is 20101202020993. The next prime is 20101202021009. The reversal of 20101202021002 is 20012020210102.

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., 19441141642521 + 660060378481 = 4409211^2 + 812441^2 .

It is not an unprimeable number, because it can be changed into a prime (20101202021009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5025300505249 + ... + 5025300505252.

Almost surely, 2^{20101202021002} is an apocalyptic number.

20101202021002 is a deficient number, since it is larger than the sum of its proper divisors (10050601010504).

20101202021002 is a wasteful number, since it uses less digits than its factorization.

20101202021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10050601010503.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20101202021002 its reverse (20012020210102), we get a palindrome (40113222231104).

The spelling of 20101202021002 in words is "twenty trillion, one hundred one billion, two hundred two million, twenty-one thousand, two".