20101212122010 has 16 divisors (see below), whose sum is σ = 48242909092896. Its totient is φ = 5360323232528.

The previous prime is 20101212121931. The next prime is 20101212122027. The reversal of 20101212122010 is 1022121210102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335020202004 + ... + 335020202063.

It is an arithmetic number, because the mean of its divisors is an integer number (3015181818306).

Almost surely, 2^{20101212122010} is an apocalyptic number.

20101212122010 is an abundant number, since it is smaller than the sum of its proper divisors (28141696970886).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20101212122010 is a wasteful number, since it uses less digits than its factorization.

20101212122010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670040404077.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20101212122010 its reverse (1022121210102), we get a palindrome (21123333332112).

The spelling of 20101212122010 in words is "twenty trillion, one hundred one billion, two hundred twelve million, one hundred twenty-two thousand, ten".