121000021020122 has 4 divisors (see below), whose sum is σ = 181500031530186. Its totient is φ = 60500010510060.

The previous prime is 121000021020101. The next prime is 121000021020127. The reversal of 121000021020122 is 221020120000121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 106953633901921 + 14046387118201 = 10341839^2 + 3747851^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121000021020097 and 121000021020106.

It is not an unprimeable number, because it can be changed into a prime (121000021020127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30250005255029 + ... + 30250005255032.

Almost surely, 2^{121000021020122} is an apocalyptic number.

121000021020122 is a deficient number, since it is larger than the sum of its proper divisors (60500010510064).

121000021020122 is an equidigital number, since it uses as much as digits as its factorization.

121000021020122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60500010510063.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121000021020122 its reverse (221020120000121), we get a palindrome (342020141020243).

The spelling of 121000021020122 in words is "one hundred twenty-one trillion, twenty-one million, twenty thousand, one hundred twenty-two".