2120021220102 has 64 divisors (see below), whose sum is σ = 4300058997504. Its totient is φ = 696747018240.

The previous prime is 2120021220101. The next prime is 2120021220143. The reversal of 2120021220102 is 2010221200212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120021220101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 242644278 + ... + 242653014.

It is an arithmetic number, because the mean of its divisors is an integer number (67188421836).

Almost surely, 2^{2120021220102} is an apocalyptic number.

2120021220102 is an abundant number, since it is smaller than the sum of its proper divisors (2180037777402).

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

2120021220102 is a wasteful number, since it uses less digits than its factorization.

2120021220102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10853.

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

Adding to 2120021220102 its reverse (2010221200212), we get a palindrome (4130242420314).

It can be divided in two parts, 21200212 and 20102, that multiplied together give a palindrome (426166661624).

The spelling of 2120021220102 in words is "two trillion, one hundred twenty billion, twenty-one million, two hundred twenty thousand, one hundred two".