20110101021002 has 4 divisors (see below), whose sum is σ = 30165151531506. Its totient is φ = 10055050510500.

The previous prime is 20110101020959. The next prime is 20110101021047. The reversal of 20110101021002 is 20012010101102.

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., 16482146552041 + 3627954468961 = 4059821^2 + 1904719^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5027525255249 + ... + 5027525255252.

Almost surely, 2^{20110101021002} is an apocalyptic number.

20110101021002 is a deficient number, since it is larger than the sum of its proper divisors (10055050510504).

20110101021002 is a wasteful number, since it uses less digits than its factorization.

20110101021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10055050510503.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20110101021002 its reverse (20012010101102), we get a palindrome (40122111122104).

The spelling of 20110101021002 in words is "twenty trillion, one hundred ten billion, one hundred one million, twenty-one thousand, two".