70202121 has 16 divisors (see below), whose sum is σ = 102436608. Its totient is φ = 42411600.

The previous prime is 70202107. The next prime is 70202123. The reversal of 70202121 is 12120207.

It is not a de Polignac number, because 70202121 - 2¹¹ = 70200073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70202121.

It is not an unprimeable number, because it can be changed into a prime (70202123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7710 + ... + 14136.

It is an arithmetic number, because the mean of its divisors is an integer number (6402288).

Almost surely, 2^70202121 is an apocalyptic number.

It is an amenable number.

70202121 is a deficient number, since it is larger than the sum of its proper divisors (32234487).

70202121 is a wasteful number, since it uses less digits than its factorization.

70202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6772.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 70202121 is about 8378.6705986093. The cubic root of 70202121 is about 412.5248146688.

Adding to 70202121 its reverse (12120207), we get a palindrome (82322328).

The spelling of 70202121 in words is "seventy million, two hundred two thousand, one hundred twenty-one".