121002111122020 has 12 divisors (see below), whose sum is σ = 254104433356284. Its totient is φ = 48400844448800.

The previous prime is 121002111122017. The next prime is 121002111122027. The reversal of 121002111122020 is 20221111200121.

It can be written as a sum of positive squares in 2 ways, for example, as 45062006054976 + 75940105067044 = 6712824^2 + 8714362^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121002111121985 and 121002111122003.

It is not an unprimeable number, because it can be changed into a prime (121002111122027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3025052778031 + ... + 3025052778070.

It is an arithmetic number, because the mean of its divisors is an integer number (21175369446357).

Almost surely, 2^{121002111122020} is an apocalyptic number.

121002111122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121002111122020 is an abundant number, since it is smaller than the sum of its proper divisors (133102322234264).

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

121002111122020 is a wasteful number, since it uses less digits than its factorization.

121002111122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6050105556110 (or 6050105556108 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121002111122020 its reverse (20221111200121), we get a palindrome (141223222322141).

It can be divided in two parts, 12100211 and 1122020, that added together give a palindrome (13222231).

The spelling of 121002111122020 in words is "one hundred twenty-one trillion, two billion, one hundred eleven million, one hundred twenty-two thousand, twenty".