2021012220102 has 16 divisors (see below), whose sum is σ = 4058796328752. Its totient is φ = 670875425280.

The previous prime is 2021012220089. The next prime is 2021012220109. The reversal of 2021012220102 is 2010222101202.

It is a super-2 number, since 2×2021012220102² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021012220109) 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, 698827123 + ... + 698830014.

It is an arithmetic number, because the mean of its divisors is an integer number (253674770547).

Almost surely, 2^{2021012220102} is an apocalyptic number.

2021012220102 is an abundant number, since it is smaller than the sum of its proper divisors (2037784108650).

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

2021012220102 is a wasteful number, since it uses less digits than its factorization.

2021012220102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397657383.

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

Adding to 2021012220102 its reverse (2010222101202), we get a palindrome (4031234321304).

The spelling of 2021012220102 in words is "two trillion, twenty-one billion, twelve million, two hundred twenty thousand, one hundred two".