20212001220102 has 16 divisors (see below), whose sum is σ = 41516543047152. Its totient is φ = 6555243638880.

The previous prime is 20212001220101. The next prime is 20212001220137. The reversal of 20212001220102 is 20102210021202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212001220101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45522525049 + ... + 45522525492.

It is an arithmetic number, because the mean of its divisors is an integer number (2594783940447).

Almost surely, 2^{20212001220102} is an apocalyptic number.

20212001220102 is an abundant number, since it is smaller than the sum of its proper divisors (21304541827050).

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

20212001220102 is a wasteful number, since it uses less digits than its factorization.

20212001220102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91045050583.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20212001220102 its reverse (20102210021202), we get a palindrome (40314211241304).

The spelling of 20212001220102 in words is "twenty trillion, two hundred twelve billion, one million, two hundred twenty thousand, one hundred two".